57042339 has 16 divisors (see below), whose sum is σ = 77114112. Its totient is φ = 37503648.

The previous prime is 57042319. The next prime is 57042347. The reversal of 57042339 is 93324075.

It is a happy number.

It is not a de Polignac number, because 57042339 - 2⁷ = 57042211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57042319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76402 + ... + 77144.

It is an arithmetic number, because the mean of its divisors is an integer number (4819632).

Almost surely, 2^57042339 is an apocalyptic number.

57042339 is a deficient number, since it is larger than the sum of its proper divisors (20071773).

57042339 is a wasteful number, since it uses less digits than its factorization.

57042339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 57042339 is about 7552.6378835477. The cubic root of 57042339 is about 384.9453770822.

The spelling of 57042339 in words is "fifty-seven million, forty-two thousand, three hundred thirty-nine".