57142270 has 32 divisors (see below), whose sum is σ = 111453408. Its totient is φ = 21009408.

The previous prime is 57142231. The next prime is 57142279. The reversal of 57142270 is 7224175.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57142279) 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, 3402 + ... + 11218.

It is an arithmetic number, because the mean of its divisors is an integer number (3482919).

Almost surely, 2^57142270 is an apocalyptic number.

57142270 is a deficient number, since it is larger than the sum of its proper divisors (54311138).

57142270 is a wasteful number, since it uses less digits than its factorization.

57142270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7884.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 57142270 is about 7559.2506242352. The cubic root of 57142270 is about 385.1700378944.

The spelling of 57142270 in words is "fifty-seven million, one hundred forty-two thousand, two hundred seventy".