242865231 has 16 divisors (see below), whose sum is σ = 372153600. Its totient is φ = 138002688.

The previous prime is 242865193. The next prime is 242865241. The reversal of 242865231 is 132568242.

It is not a de Polignac number, because 242865231 - 2⁶ = 242865167 is a prime.

It is a super-2 number, since 2×242865231² = 117967040857366722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242865192 and 242865201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242865241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28546 + ... + 36063.

It is an arithmetic number, because the mean of its divisors is an integer number (23259600).

Almost surely, 2^242865231 is an apocalyptic number.

242865231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

242865231 is a deficient number, since it is larger than the sum of its proper divisors (129288369).

242865231 is a wasteful number, since it uses less digits than its factorization.

242865231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64798.

The product of its digits is 23040, while the sum is 33.

The square root of 242865231 is about 15584.1339509130. The cubic root of 242865231 is about 623.9097631061.

The spelling of 242865231 in words is "two hundred forty-two million, eight hundred sixty-five thousand, two hundred thirty-one".