57142332 has 36 divisors (see below), whose sum is σ = 155555400. Its totient is φ = 17582112.

The previous prime is 57142303. The next prime is 57142339. The reversal of 57142332 is 23324175.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×57142332² = 6530492212796448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57142296 and 57142305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57142339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60582 + ... + 61517.

Almost surely, 2^57142332 is an apocalyptic number.

57142332 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

57142332 is an abundant number, since it is smaller than the sum of its proper divisors (98413068).

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

57142332 is a wasteful number, since it uses less digits than its factorization.

57142332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122122 (or 122117 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 57142332 is about 7559.2547251697. The cubic root of 57142332 is about 385.1701771990.

The spelling of 57142332 in words is "fifty-seven million, one hundred forty-two thousand, three hundred thirty-two".