42531224 has 16 divisors (see below), whose sum is σ = 79827000. Its totient is φ = 21244032.

The previous prime is 42531211. The next prime is 42531277. The reversal of 42531224 is 42213524.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42531224.

It is a congruent number.

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, 8327 + ... + 12425.

Almost surely, 2^42531224 is an apocalyptic number.

It is an amenable number.

42531224 is a deficient number, since it is larger than the sum of its proper divisors (37295776).

42531224 is a wasteful number, since it uses less digits than its factorization.

42531224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5402 (or 5398 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 42531224 is about 6521.5967369962. The cubic root of 42531224 is about 349.0620437419.

Adding to 42531224 its reverse (42213524), we get a palindrome (84744748).

The spelling of 42531224 in words is "forty-two million, five hundred thirty-one thousand, two hundred twenty-four".