57421442 has 8 divisors (see below), whose sum is σ = 92757756. Its totient is φ = 26502192.

The previous prime is 57421411. The next prime is 57421493. The reversal of 57421442 is 24412475.

It can be written as a sum of positive squares in 2 ways, for example, as 53304601 + 4116841 = 7301^2 + 2029^2 .

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

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, 1104233 + ... + 1104284.

Almost surely, 2^57421442 is an apocalyptic number.

57421442 is a deficient number, since it is larger than the sum of its proper divisors (35336314).

57421442 is a wasteful number, since it uses less digits than its factorization.

57421442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208532.

The product of its digits is 8960, while the sum is 29.

The square root of 57421442 is about 7577.6937124695. The cubic root of 57421442 is about 385.7962762928.

The spelling of 57421442 in words is "fifty-seven million, four hundred twenty-one thousand, four hundred forty-two".