56539842 has 16 divisors (see below), whose sum is σ = 117996480. Its totient is φ = 18027152.

The previous prime is 56539799. The next prime is 56539859. The reversal of 56539842 is 24893565.

It is a junction number, because it is equal to n+sod(n) for n = 56539794 and 56539803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204717 + ... + 204992.

It is an arithmetic number, because the mean of its divisors is an integer number (7374780).

Almost surely, 2^56539842 is an apocalyptic number.

56539842 is an abundant number, since it is smaller than the sum of its proper divisors (61456638).

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

56539842 is a wasteful number, since it uses less digits than its factorization.

56539842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409737.

The product of its digits is 259200, while the sum is 42.

The square root of 56539842 is about 7519.2979725504. The cubic root of 56539842 is about 383.8116888100.

The spelling of 56539842 in words is "fifty-six million, five hundred thirty-nine thousand, eight hundred forty-two".