256532542 has 24 divisors (see below), whose sum is σ = 449449560. Its totient is φ = 109494000.

The previous prime is 256532537. The next prime is 256532543. The reversal of 256532542 is 245235652.

256532542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 256532498 and 256532507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256532543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19384 + ... + 29812.

It is an arithmetic number, because the mean of its divisors is an integer number (18727065).

Almost surely, 2^256532542 is an apocalyptic number.

256532542 is a deficient number, since it is larger than the sum of its proper divisors (192917018).

256532542 is a wasteful number, since it uses less digits than its factorization.

256532542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10696 (or 10689 counting only the distinct ones).

The product of its digits is 72000, while the sum is 34.

The square root of 256532542 is about 16016.6332916753. The cubic root of 256532542 is about 635.4004063209.

The spelling of 256532542 in words is "two hundred fifty-six million, five hundred thirty-two thousand, five hundred forty-two".