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242531141 = 8912012269
BaseRepresentation
bin11100111010010…
…11101101000101
3121220100212011212
432131023231011
5444041444031
640022141205
76003323606
oct1635135505
9556325155
10242531141
111149a2266
1269281805
133b328c68
14242d3dad
151645b12b
hexe74bb45

242531141 has 8 divisors (see below), whose sum is σ = 245568600. Its totient is φ = 239500800.

The previous prime is 242531117. The next prime is 242531153. The reversal of 242531141 is 141135242.

It can be written as a sum of positive squares in 4 ways, for example, as 42902500 + 199628641 = 6550^2 + 14129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242531141 - 26 = 242531077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242521141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105755 + ... + 108023.

It is an arithmetic number, because the mean of its divisors is an integer number (30696075).

Almost surely, 2242531141 is an apocalyptic number.

It is an amenable number.

242531141 is a deficient number, since it is larger than the sum of its proper divisors (3037459).

242531141 is a wasteful number, since it uses less digits than its factorization.

242531141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559.

The product of its digits is 960, while the sum is 23.

The square root of 242531141 is about 15573.4113475500. The cubic root of 242531141 is about 623.6235444710.

Adding to 242531141 its reverse (141135242), we get a palindrome (383666383).

The spelling of 242531141 in words is "two hundred forty-two million, five hundred thirty-one thousand, one hundred forty-one".

Divisors: 1 89 1201 2269 106889 201941 2725069 242531141