57121842 has 8 divisors (see below), whose sum is σ = 114243696. Its totient is φ = 19040612.

The previous prime is 57121829. The next prime is 57121859. The reversal of 57121842 is 24812175.

It is a sphenic number, since it is the product of 3 distinct primes.

57121842 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4760148 + ... + 4760159.

It is an arithmetic number, because the mean of its divisors is an integer number (14280462).

Almost surely, 2^57121842 is an apocalyptic number.

57121842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57121842 is a wasteful number, since it uses less digits than its factorization.

57121842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9520312.

The product of its digits is 4480, while the sum is 30.

The square root of 57121842 is about 7557.8993113166. The cubic root of 57121842 is about 385.1241338066.

The spelling of 57121842 in words is "fifty-seven million, one hundred twenty-one thousand, eight hundred forty-two".