57942240 has 48 divisors (see below), whose sum is σ = 182519568. Its totient is φ = 15451136.

The previous prime is 57942187. The next prime is 57942277. The reversal of 57942240 is 4224975.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 59877 + ... + 60836.

It is an arithmetic number, because the mean of its divisors is an integer number (3802491).

Almost surely, 2^57942240 is an apocalyptic number.

It is an amenable number.

57942240 is an abundant number, since it is smaller than the sum of its proper divisors (124577328).

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

57942240 is a wasteful number, since it uses less digits than its factorization.

57942240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120731 (or 120723 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 57942240 is about 7611.9800315030. The cubic root of 57942240 is about 386.9591260773.

The spelling of 57942240 in words is "fifty-seven million, nine hundred forty-two thousand, two hundred forty".