June 2011
 
Preliminary Terms No. 42
Registration Statement No. 333-155535
Dated June 13, 2011
Filed pursuant to Rule 433

INTEREST RATE STRUCTURED INVESTMENTS
Senior Floating Rate Notes due June 30, 2026

6-Month USD LIBOR and S&P 500® Index Range Accrual Notes

As further described below, subject to our redemption right, interest will accrue quarterly on the notes in (i) Year 1, at a fixed rate equal to 7.00% per annum and (ii) Years 2 to maturity, at a variable rate equal to 7.00% per annum for each day that (i) 6-Month USD LIBOR is greater than or equal to 0.00% and less than or equal to 6.00% and (ii) the closing level of the S&P 500® Index is greater than or equal to 925.

We, JPMorgan Chase & Co., have the right to redeem the notes on any quarterly redemption date beginning June 30, 2012. All payments on the notes, including the repayment of principal, are subject to the credit risk of JPMorgan Chase & Co.

SUMMARY TERMS  
Issuer: JPMorgan Chase & Co.
Aggregate principal amount: $                      . We may increase the aggregate principal amount prior to the original issue date but are not required to do so.
Stated principal amount: $1,000 per note
Issue price: $1,000 per note (see “Commissions and Issue Price” below)
Pricing date: June   , 2011 (expected to price on or about June 27, 2011)
Original issue date: June 30, 2011 (     business days after the pricing date)
Interest accrual date: June 30, 2011
Maturity date: June 30, 2026
Interest: Original issue date to but excluding June 30, 2012 (the “initial interest payment period”): 7.00% per annum June 30, 2012 to but excluding the maturity date:
         (x) 7.00% per annum times (y) N/ACT; where
 

“N” = the total number of calendar days in the applicable interest payment period for which (i) the LIBOR reference rate on the corresponding accrual determination date is within the LIBOR reference rate range and (ii) the index closing value on the corresponding accrual determination date is greater than or equal to the index reference level (each such day, an “accrual day”); and
“ACT” = the total number of calendar days in the applicable interest payment period.

  If on the accrual determination date corresponding to any calendar day the LIBOR reference rate is not within the LIBOR reference rate range or the index closing value is less than the index reference level, interest will accrue at a rate of 0.00% per annum for that day.
Interest payment period: Quarterly
Interest payment dates: Each June 30, September 30, December 30 and March 30, beginning September 30, 2011; provided that if any such day is not a business day, that interest payment will be made on the next succeeding business day and no adjustment will be made to any interest payment made on that succeeding business day.
Day-count convention: 30/360
Redemption percentage at redemption date: 100%
Redemption: Beginning June 30, 2012, we have the right to redeem all of these notes on any quarterly redemption date and pay to you 100% of the stated principal amount per note plus accrued and unpaid interest to but excluding the date of such redemption. If we decide to redeem the notes, we will give you notice at least 5 business days before the redemption date specified in the notice.
Redemption dates: The Interest Payment Dates beginning on June 30, 2012
LIBOR reference rate: Six-Month USD LIBOR. Please see “Additional Provisions” beginning on page 2 below.
LIBOR reference rate range: Greater than or equal to 0.00% and less than or equal to 6.00%
LIBOR reference rate cutoff: The LIBOR reference rate for any day from and including the seventh scheduled business day prior to the related interest payment date for any interest payment period shall be the LIBOR reference rate as in effect for the trading day immediately preceding such seventh scheduled business day. Please see “Additional Provisions” beginning on page 2 below.
Index: The S&P 500® Index. Please see “Additional Provisions” beginning on page 2 below.
Index closing value: The daily closing value of the index. Please see “Additional Provisions” beginning on page 2 below.
Index reference level: 925
Index cutoff: The index closing value for any day from and including the seventh scheduled business day prior to but excluding the related interest payment date for any interest payment period shall be the index closing value for the trading day immediately preceding such seventh scheduled business day. Please see “Additional Provisions” beginning on page 2 below.
 
 
Specified currency: U.S. dollars
Trustee: Deutsche Bank Trust Company Americas (formerly Bankers Trust Company)
Calculation agent: J.P. Morgan Securities LLC (“JPMS”)
Listing: The notes will not be listed on any securities exchange.
Denominations: $1,000 / $1,000
CUSIP / ISIN: 48125XUV6 / US48125XUV62
Book-entry or certificated note: Book-entry
Business day: New York
Agent: JPMS
Commissions and issue price: Price to Public(1) Fees and Commissions(2) Proceeds to Issuer

Per Note

$1,000 $35.00 $965.00

Total

$ $ $
(1)      The price to the public includes the estimated cost of hedging our obligations under the notes through one or more of our affiliates, which includes our affiliates’ expected cost of providing such hedge as well as the profit our affiliates expect to realize in consideration for assuming the risks inherent in providing such hedge. For additional related information, please see “Use of Proceeds” beginning on PS-28 of the accompanying product supplement no. MS-12-A-I.
 
(2)      JPMS, acting as agent for JPMorgan Chase & Co., will receive a commission and will use all of that commission to allow selling concessions to Morgan Stanley Smith Barney LLC (“MSSB”) that will depend on market conditions on the pricing date. In no event will the commission received by JPMS and the selling concessions to be allowed to MSSB exceed $35.00 per $1,000 stated principal amount note. See “Underwriting (Conflicts of Interest)” beginning on page PS-50 of the accompanying product supplement no. MS-12-A-I.

Investing in the notes involves a number of risks. See “Risk Factors” on page PS-18 of the accompanying product supplement no. MS-12-A-I and “Risk Factors” beginning on page 7 of these preliminary terms.

Neither the Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of the notes or passed upon the accuracy or the adequacy of this document or the accompanying prospectus supplement and prospectus. Any representation to the contrary is a criminal offense.

The notes are not bank deposits and are not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency, nor are they obligations of, or guaranteed by, a bank.

YOU SHOULD READ THIS DOCUMENT TOGETHER WITH THE RELATED PRODUCT SUPPLEMENT NO. MS-12-A-I, PROSPECTUS SUPPLEMENT AND PROSPECTUS, EACH OF WHICH CAN BE ACCESSED VIA THE HYPERLINKS BELOW, BEFORE YOU DECIDE TO INVEST.

Product supplement no. MS-12-A-I dated February 9, 2011:
http://www.sec.gov/Archives/edgar/data/19617/000089109211000923/e42038_424b2.pdf

Prospectus supplement dated November 21, 2008:
http://www.sec.gov/Archives/edgar/data/19617/000089109208005661/e33600_424b2.pdf

Prospectus dated November 21, 2008:
http://www.sec.gov/Archives/edgar/data/19617/000089109208005658/e33655_424b2.pdf

The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in this offering will arrange to send you the prospectus if you request it by calling toll-free (800) 869-3326.



Senior Floating Rate Notes due June 30, 2026

The Notes

The notes offered are senior unsecured obligations of JPMorgan Chase & Co. We describe the basic features of these notes in the sections of the accompanying prospectus called “Description of Debt Securities,” the accompanying prospectus supplement called “Description of Notes” and the accompanying product supplement no. MS-12-A-I called “Description of Notes,” subject to and as modified by the provisions described above. All payments on the notes are subject to the credit risk of JPMorgan Chase & Co.

Additional Provisions

LIBOR Reference Rate

For each accrual determination date, the LIBOR reference rate refers to the London Interbank Offer Rate for deposits in U.S. dollars with a Designated Maturity of six months that appears on Reuters page “LIBOR01” under the heading “6Mo” (or any successor page) at approximately 11:00 a.m., London time, on such accrual determination date, as determined by the calculation agent. If on such accrual determination date, six-month USD LIBOR cannot be determined by reference to Reuters page “LIBOR01” (or any successor page), then the calculation agent will determine six-month USD LIBOR in accordance with the procedures set forth in the accompanying product supplement no. MS-12-A-I under “Description of Notes — Interest — The Underlying Rates and Levels — LIBOR Reference Rate.”

Index Closing Value

For each accrual determination date, the official closing level of the S&P 500® Index (the “Index”) published following the regular official weekday close of trading for the S&P 500® Index on Bloomberg Professional® Service page “SPX Index HP” on such accrual determination date. If a market disruption event exists with respect to the S&P 500® Index on any accrual determination date, the index closing value on the immediately preceding accrual determination date for which no market disruption event occurs or is continuing will be the index closing value for such disrupted accrual determination date (and will also be the index closing value for the originally scheduled accrual determination date). In certain circumstances, the index closing value will be based on the alternative calculation of the S&P 500® Index as described under “General Terms of Notes — Discontinuation of an Index; Alteration of Method Calculation” in the accompanying product supplement no. MS-12-A-I.

Accrual Determination Date

For each calendar day, the second trading day prior to such calendar day; provided that for the period commencing on the seventh scheduled business day prior to but excluding each interest payment date, the accrual determination date will be the first trading day that immediately precedes such period. For purposes of product supplement no. MS-12-A-I, an accrual determination date is a LIBOR determination date and an index determination date.

Trading Day

A day, as determined by the calculation agent, on which (a) trading is generally conducted on (i) the relevant exchanges for securities underlying the S&P 500® Index or the relevant successor index, if applicable, and (ii) the exchanges on which futures or options contracts related to the S&P 500® Index or the relevant successor index, if applicable, are traded, other than a day on which trading on such relevant exchange or exchange on which such futures or options contracts are traded is scheduled to close prior to its regular weekday closing time, and (b) commercial banks and foreign exchange markets settle payments and are open for general business (including dealings in foreign exchange and foreign currency deposits) in London.

Business Day

Any day other than a day on which banking institutions in the City of New York are authorized or required by law, regulation or executive order to close or a day on which transactions in dollars are not conducted.

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Hypothetical Examples

The table below presents examples of the hypothetical interest rate that would accrue on the notes based on the total number of calendar days in an interest payment period on which the LIBOR reference rate is within the LIBOR reference rate range and the index closing value is greater than or equal to the index reference level. The table reflects that the interest payment period contains 90 calendar days and reflects an interest rate of 7.00% per annum.

The example below is for purposes of illustration only and would provide different results if different assumptions were made. The actual quarterly interest rate and payments will depend on the actual index closing value and LIBOR reference rate on each day.

N
Hypothetical Interest Rate
0 0.0000%
10 0.7778%
20 1.5556%
25 1.9444%
35 2.7222%
50 3.8889%
75 5.8333%
90 7.0000%

Historical Information

LIBOR Reference Rate

The following graph sets forth the LIBOR reference rate for the period from January 2, 2006 to June 10, 2011. The LIBOR reference rate on June 10, 2011 was 0.39675%. The historical performance of the LIBOR reference rate should not be taken as an indication of its future performance. We cannot give you any assurance that the LIBOR reference rate will be within the LIBOR reference rate range on any day of any interest payment period. We obtained the information in the graph below, without independent verification, from Bloomberg Financial Markets, which closely parallels but is not necessarily exactly the same as the Reuters Page price sources used to determine the LIBOR reference rate.

The bold lines in the graph indicate the LIBOR reference rate range of 0.00% to of 6.00%.

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Senior Floating Rate Notes due June 30, 2026


Historical period  
Total number of days in historical period, beginning on January 2, 2006 1,374
Number of days on or after January 2, 2006 that the LIBOR reference rate was
greater than or equal to 0.00% and less than or equal to 6.00%
1,374
Number of days on or after January 2, 2006 that the LIBOR reference rate was
less than 0.00% or greater than 6.00%
0

The historical performance shown above is not indicative of future performance. The LIBOR reference rate may in the future be less than 0.00% or greater than 6.00% for extended periods of time. You will not receive interest for any day that the LIBOR reference rate is less than 0.00% or greater than 6.00%.

Moreover, even if the LIBOR reference rate is greater than or equal to 0.00% and less than or equal to 6.00% on any day, if the index closing value is less than the index reference level on that day, you will not receive any interest for that day.

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Information about the Underlying Index

The S&P 500® Index. The S&P 500® Index, which is calculated, maintained and published by Standard & Poor’s Financial Services LLC, a subsidiary of The McGraw-Hill Companies, Inc., consists of 500 component stocks selected to provide a performance benchmark for the U.S. equity markets. The calculation of the S&P 500® Index is based on the relative value of the float adjusted aggregate market capitalization of the 500 component companies as of a particular time as compared to the aggregate average market capitalization of the 500 similar companies during the base period of the years 1941 through 1943. The S&P 500® Index is described under the heading “The S&P 500® Index” in the accompanying product supplement no. MS-12-A-I.

License Agreement between Standard & Poor’s and J.P. Morgan Securities LLC “Standard & Poor’s®,” “S&P®,” “S&P 500®” and “Standard & Poor’s 500” are trademarks of The McGraw-Hill Companies, Inc. and have been licensed for use by J.P. Morgan Securities LLC. See “The S&P 500® Index — License Agreement with S&P” in the accompanying product supplement no. MS-12-A-I.

Historical Information

The following table sets forth the published high and low index closing values, as well as end-of-quarter index closing values, for each quarter in the period from January 2, 2006 through June 10, 2011. The graph following the table sets forth the daily closing values of the index for the period from January 2, 2006 through June 10, 2011. The closing value of the index on June 10, 2011 was 1,270.98. The historical values of the S&P 500® index should not be taken as an indication of future performance, and no assurance can be given as to the level of the index on any calendar day during the term of the notes. The payment of dividends on the stocks that constitute the index are not reflected in its level and, therefore, have no effect on the calculation of the payment of interest. We obtained the information in the table and graph below from Bloomberg Financial Markets, without independent verification.

S&P 500® Index High Low Period End

2006

     

First Quarter

1,307.25 1,254.78 1,294.83

Second Quarter

1,325.76 1,223.69 1,270.20

Third Quarter

1,339.15 1,234.49 1,335.85

Fourth Quarter

1,427.09 1,331.32 1,418.30

2007

     

First Quarter

1,459.68 1,374.12 1,420.86

Second Quarter

1,539.18 1,424.55 1,503.35

Third Quarter

1,553.08 1,406.70 1,526.75

Fourth Quarter

1,565.15 1,407.22 1,468.36

2008

     

First Quarter

1,447.16 1,273.37 1,322.70

Second Quarter

1,426.63 1,278.38 1,280.00

Third Quarter

1,305.32 1,106.39 1,166.36

Fourth Quarter

1,161.06 752.44 903.25

2009

     

First Quarter

934.70 676.53 797.87

Second Quarter

946.21 811.08 919.32

Third Quarter

1,071.66 879.13 1,057.08

Fourth Quarter

1,127.78 1,025.21 1,115.10

2010

     

First Quarter

1,174.17 1,056.74 1,169.43

Second Quarter

1,217.28 1,030.71 1,030.71

Third Quarter

1,148.67 1,022.58 1,141.20

Fourth Quarter

1,259.78 1,137.03 1,257.64

2011

     

First Quarter

1,343.01 1,256.88 1,325.83

Second Quarter (through June 10, 2011)

1,363.61 1,270.98 1,270.98

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Senior Floating Rate Notes due June 30, 2026

The bold line in the graph indicates the index reference level of 925.

Historical period  
Total number of days in the historical period, beginning on January 2, 2006 1,370
Number of days on or after January 2, 2006 that the index was greater than or equal to 925 1,208
Number of days on or after January 2, 2006 that the index was less than 925 162

The historical performance shown above is not indicative of future performance. The index closing value may in the future be less than the index reference level for extended periods of time. You will not receive interest for any day that the index closing value is less than 925.

Moreover, even if the index closing value is greater than or equal to 925 on any day, if the LIBOR reference rate is less than 0.00% or greater than 6.00% on that day, you will not receive any interest for that day.

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Senior Floating Rate Notes due June 30, 2026

Risk Factors

The following is a non-exhaustive list of certain key risk factors for investors in the notes. For further discussion of these and other risks, you should read the section entitled “Risk Factors” beginning on page PS-18 of the accompanying product supplement no. MS-12-A-I. We also urge you to consult your investment, legal, tax, accounting and other advisers before you invest in the notes.

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Supplemental Plan of Distribution

Subject to regulatory constraints, JPMS intends to use its reasonable efforts to offer to purchase the notes in the secondary market, but is not required to do so.

We or our affiliate may enter into swap agreements or related hedge transactions with one of our other affiliates or unaffiliated counterparties in connection with the sale of the notes and JPMS and/or an affiliate may earn additional income as a result of payments pursuant to the swap or related hedge transactions. See “Use of Proceeds” beginning on page PS-7 of the accompanying product supplement no. MS-12-A-I.

Tax Considerations

You should review carefully the section entitled “Certain U.S. Federal Income Tax Consequences” in the accompanying product supplement no. MS-12-A-I. Subject to the limitations described in the accompanying product supplement no. MS-12-A-I, and based on certain factual representations received from us, in the opinion of our special tax counsel, Sidley Austin LLP, the notes should be treated for U.S. federal income tax purposes as “variable rate debt instruments”. We and you, by virtue of purchasing the notes, agree to treat the notes as variable rate debt instruments. Assuming this characterization is respected, interest paid on the notes will generally be taxable to you as ordinary income at the time it accrues or is received in accordance with your method of accounting for U.S. federal income tax purposes, and gain or loss realized on the sale, exchange or other disposition of the notes generally will be capital gain or loss. However, due to the absence of authorities that directly address the proper characterization of the notes, the Internal Revenue Service (the “IRS”) or a court may not respect the characterization and tax treatment described above. In particular, the IRS could seek to treat the notes for U.S. federal income tax purposes as “contingent payment debt instruments.” If the IRS were successful in asserting this treatment, the timing and character of income with respect to the notes would be significantly affected. See “Certain U.S. Federal Income Tax Consequences —Tax Treatment of U.S. Holders—Notes Treated as Contingent Payment Debt Instruments” in the accompanying product supplement no. MS-12-A-I. Both U.S. and Non-U.S. Holders should consult their tax advisers regarding the U.S. federal income tax consequences of an investment in the notes, including possible alternative treatments.

Where You Can Find More Information

You may revoke your offer to purchase the notes at any time prior to the time at which we accept such offer by notifying the applicable agent. We reserve the right to change the terms of, or reject any offer to purchase, the notes prior to their issuance. In the event of any changes to the terms of the notes, we will notify you and you will be asked to accept such changes in connection with your purchase. You may also choose to reject such changes, in which case we may reject your offer to purchase.

You should read this document together with the prospectus dated November 21, 2008, as supplemented by the prospectus supplement dated November 21, 2008 relating to our Series E medium-term notes of which these notes are a part, and the more detailed information contained in product supplement no. MS-12-A-I dated February 9, 2011.

This document, together with the documents listed below, contains the terms of the notes and supersedes all other prior or contemporaneous oral statements as well as any other written materials including preliminary or indicative pricing terms, correspondence, trade ideas, structures for implementation, sample structures, stand-alone fact sheets, brochures or other educational materials of ours. You should carefully consider, among other things, the matters set forth in “Risk Factors” in the accompanying product supplement no. MS-12-A-I. We urge you to consult your investment, legal, tax, accounting and other advisers before you invest in the notes.

You may access these documents on the SEC website at www.sec.gov as follows (or if such address has changed, by reviewing our filings for the relevant date on the SEC website):

Our Central Index Key, or CIK, on the SEC website is 19617.

As used in this document, the “Company,” “we,” “us,” and “our” refer to JPMorgan Chase & Co.

Contact Information

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Morgan Stanley Smith Barney clients may contact their local Morgan Stanley Smith Barney branch office or Morgan Stanley Smith Barney’s principal executive offices at 2000 Westchester Avenue, Purchase, New York 10577 (telephone number (800) 869-3326).

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