57918442 has 4 divisors (see below), whose sum is σ = 86877666. Its totient is φ = 28959220.

The previous prime is 57918397. The next prime is 57918461. The reversal of 57918442 is 24481975.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 45037521 + 12880921 = 6711^2 + 3589^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 57918395 and 57918404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14479609 + ... + 14479612.

Almost surely, 2^57918442 is an apocalyptic number.

57918442 is a deficient number, since it is larger than the sum of its proper divisors (28959224).

57918442 is a wasteful number, since it uses less digits than its factorization.

57918442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28959223.

The product of its digits is 80640, while the sum is 40.

The square root of 57918442 is about 7610.4166771603. The cubic root of 57918442 is about 386.9061416206.

The spelling of 57918442 in words is "fifty-seven million, nine hundred eighteen thousand, four hundred forty-two".