57642420 has 48 divisors (see below), whose sum is σ = 176073408. Its totient is φ = 13973760.

The previous prime is 57642419. The next prime is 57642449. The reversal of 57642420 is 2424675.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43009 + ... + 44328.

It is an arithmetic number, because the mean of its divisors is an integer number (3668196).

Almost surely, 2^57642420 is an apocalyptic number.

It is an amenable number.

57642420 is an abundant number, since it is smaller than the sum of its proper divisors (118430988).

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

57642420 is a wasteful number, since it uses less digits than its factorization.

57642420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87360 (or 87358 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 57642420 is about 7592.2605329375. The cubic root of 57642420 is about 386.2905362720.

The spelling of 57642420 in words is "fifty-seven million, six hundred forty-two thousand, four hundred twenty".