42431744 has 18 divisors (see below), whose sum is σ = 84698250. Its totient is φ = 21215744.

The previous prime is 42431737. The next prime is 42431759. The reversal of 42431744 is 44713424.

It can be written as a sum of positive squares in only one way, i.e., 42406144 + 25600 = 6512^2 + 160^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82619 + ... + 83130.

Almost surely, 2^42431744 is an apocalyptic number.

It is an amenable number.

42431744 is a deficient number, since it is larger than the sum of its proper divisors (42266506).

42431744 is an equidigital number, since it uses as much as digits as its factorization.

42431744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165765 (or 165751 counting only the distinct ones).

The product of its digits is 10752, while the sum is 29.

The square root of 42431744 is about 6513.9653054035. The cubic root of 42431744 is about 348.7896806980.

The spelling of 42431744 in words is "forty-two million, four hundred thirty-one thousand, seven hundred forty-four".