42239524 has 6 divisors (see below), whose sum is σ = 73919174. Its totient is φ = 21119760.

The previous prime is 42239503. The next prime is 42239539. The reversal of 42239524 is 42593224.

It can be written as a sum of positive squares in only one way, i.e., 35046400 + 7193124 = 5920^2 + 2682^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5279937 + ... + 5279944.

Almost surely, 2^42239524 is an apocalyptic number.

It is an amenable number.

42239524 is a deficient number, since it is larger than the sum of its proper divisors (31679650).

42239524 is a wasteful number, since it uses less digits than its factorization.

42239524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10559885 (or 10559883 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 42239524 is about 6499.1941038870. The cubic root of 42239524 is about 348.2621994552.

The spelling of 42239524 in words is "forty-two million, two hundred thirty-nine thousand, five hundred twenty-four".