42432057 has 12 divisors (see below), whose sum is σ = 61698624. Its totient is φ = 28099800.

The previous prime is 42432043. The next prime is 42432059. The reversal of 42432057 is 75023424.

It is not a de Polignac number, because 42432057 - 2⁴ = 42432041 is a prime.

It is a super-2 number, since 2×42432057² = 3600958922502498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42432057.

It is not an unprimeable number, because it can be changed into a prime (42432059) 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, 14253 + ... + 16970.

It is an arithmetic number, because the mean of its divisors is an integer number (5141552).

Almost surely, 2^42432057 is an apocalyptic number.

It is an amenable number.

42432057 is a deficient number, since it is larger than the sum of its proper divisors (19266567).

42432057 is a wasteful number, since it uses less digits than its factorization.

42432057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31380 (or 31377 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 42432057 is about 6513.9893306637. The cubic root of 42432057 is about 348.7905383177.

The spelling of 42432057 in words is "forty-two million, four hundred thirty-two thousand, fifty-seven".