57142147 has 2 divisors, whose sum is σ = 57142148. Its totient is φ = 57142146.

The previous prime is 57142133. The next prime is 57142153. The reversal of 57142147 is 74124175.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57142147 - 2¹⁵ = 57109379 is a prime.

It is not a weakly prime, because it can be changed into another prime (57142157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28571073 + 28571074.

It is an arithmetic number, because the mean of its divisors is an integer number (28571074).

Almost surely, 2^57142147 is an apocalyptic number.

57142147 is a deficient number, since it is larger than the sum of its proper divisors (1).

57142147 is an equidigital number, since it uses as much as digits as its factorization.

57142147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 31.

The square root of 57142147 is about 7559.2424885037. The cubic root of 57142147 is about 385.1697615319.

The spelling of 57142147 in words is "fifty-seven million, one hundred forty-two thousand, one hundred forty-seven".