57656042 has 4 divisors (see below), whose sum is σ = 86484066. Its totient is φ = 28828020.

The previous prime is 57656029. The next prime is 57656059. The reversal of 57656042 is 24065675.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 57623281 + 32761 = 7591^2 + 181^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57655993 and 57656011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14414009 + ... + 14414012.

Almost surely, 2^57656042 is an apocalyptic number.

57656042 is a deficient number, since it is larger than the sum of its proper divisors (28828024).

57656042 is a wasteful number, since it uses less digits than its factorization.

57656042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28828023.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 57656042 is about 7593.1575777143. The cubic root of 57656042 is about 386.3209631419.

The spelling of 57656042 in words is "fifty-seven million, six hundred fifty-six thousand, forty-two".