57242394 has 24 divisors (see below), whose sum is σ = 135300672. Its totient is φ = 17346120.

The previous prime is 57242389. The next prime is 57242407. The reversal of 57242394 is 49324275.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144354 + ... + 144749.

It is an arithmetic number, because the mean of its divisors is an integer number (5637528).

Almost surely, 2^57242394 is an apocalyptic number.

57242394 is an abundant number, since it is smaller than the sum of its proper divisors (78058278).

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

57242394 is a wasteful number, since it uses less digits than its factorization.

57242394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289122 (or 289119 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 57242394 is about 7565.8703398882. The cubic root of 57242394 is about 385.3948700694.

It can be divided in two parts, 5724 and 2394, that added together give a palindrome (8118).

The spelling of 57242394 in words is "fifty-seven million, two hundred forty-two thousand, three hundred ninety-four".