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# 242 (number)

 ← 241 242 243 →
Cardinaltwo hundred forty-two
Ordinal242nd
(two hundred forty-second)
Factorization2 × 112
Greek numeralΣΜΒ´
Roman numeralCCXLII
Binary111100102
Ternary222223
Quaternary33024
Quinary14325
Senary10426
Octal3628
Duodecimal18212
VigesimalC220
Base 366Q36

242 (two hundred [and] forty-two) is the natural number following 241 and preceding 243.

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## In mathematics

242 is the smallest integer to start a run of four consecutive integers with the same number of divisors.[1][2]

242 is a nontotient since there is no integer with 242 coprimes below it.

242 is a palindrome.

242 is also:

## References

1. ^ R. K. Guy Unsolved Problems in Number Theory, section B18.
2. ^ D. Wells, The Penguin Dictionary of Curious and Interesting Numbers, Penguin Books, NY, 1986: 147, 176.