57120642 has 12 divisors (see below), whose sum is σ = 123761430. Its totient is φ = 19040208.

The previous prime is 57120599. The next prime is 57120647. The reversal of 57120642 is 24602175.

57120642 is a `hidden beast` number, since 5 + 7 + 12 + 0 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 57017601 + 103041 = 7551^2 + 321^2 .

It is not an unprimeable number, because it can be changed into a prime (57120647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1586667 + ... + 1586702.

Almost surely, 2^57120642 is an apocalyptic number.

57120642 is an abundant number, since it is smaller than the sum of its proper divisors (66640788).

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

57120642 is a wasteful number, since it uses less digits than its factorization.

57120642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173377 (or 3173374 counting only the distinct ones).

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

The square root of 57120642 is about 7557.8199237611. The cubic root of 57120642 is about 385.1214369270.

The spelling of 57120642 in words is "fifty-seven million, one hundred twenty thousand, six hundred forty-two".