57142806 has 32 divisors (see below), whose sum is σ = 132088320. Its totient is φ = 16142016.

The previous prime is 57142793. The next prime is 57142843. The reversal of 57142806 is 60824175.

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, 3906 + ... + 11381.

It is an arithmetic number, because the mean of its divisors is an integer number (4127760).

Almost surely, 2^57142806 is an apocalyptic number.

57142806 is an abundant number, since it is smaller than the sum of its proper divisors (74945514).

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

57142806 is a wasteful number, since it uses less digits than its factorization.

57142806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15388.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 57142806 is about 7559.2860774018. The cubic root of 57142806 is about 385.1712422013.

The spelling of 57142806 in words is "fifty-seven million, one hundred forty-two thousand, eight hundred six".