57210642 has 24 divisors (see below), whose sum is σ = 125187660. Its totient is φ = 18880800.

The previous prime is 57210641. The next prime is 57210689. The reversal of 57210642 is 24601275.

57210642 is a `hidden beast` number, since 5 + 7 + 2 + 10 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 52838361 + 4372281 = 7269^2 + 2091^2 .

It is not an unprimeable number, because it can be changed into a prime (57210641) 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, 13917 + ... + 17552.

Almost surely, 2^57210642 is an apocalyptic number.

57210642 is an abundant number, since it is smaller than the sum of its proper divisors (67977018).

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

57210642 is a wasteful number, since it uses less digits than its factorization.

57210642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31578 (or 31575 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 57210642 is about 7563.7716782039. The cubic root of 57210642 is about 385.3235981771.

The spelling of 57210642 in words is "fifty-seven million, two hundred ten thousand, six hundred forty-two".