242915256 has 96 divisors (see below), whose sum is σ = 695185920. Its totient is φ = 76507200.

The previous prime is 242915251. The next prime is 242915291. The reversal of 242915256 is 652519242.

242915256 is a `hidden beast` number, since 2 + 42 + 91 + 525 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 242915256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242915251) 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 23 ways as a sum of consecutive naturals, for example, 94711 + ... + 97241.

It is an arithmetic number, because the mean of its divisors is an integer number (7241520).

Almost surely, 2^242915256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242915256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347592960).

242915256 is an abundant number, since it is smaller than the sum of its proper divisors (452270664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242915256 is a wasteful number, since it uses less digits than its factorization.

242915256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617 (or 2610 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 242915256 is about 15585.7388660275. The cubic root of 242915256 is about 623.9525974839.

The spelling of 242915256 in words is "two hundred forty-two million, nine hundred fifteen thousand, two hundred fifty-six".