42631924 has 12 divisors (see below), whose sum is σ = 75829348. Its totient is φ = 20966400.

The previous prime is 42631909. The next prime is 42631933. The reversal of 42631924 is 42913624.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3168400 + 39463524 = 1780^2 + 6282^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87117 + ... + 87604.

Almost surely, 2^42631924 is an apocalyptic number.

It is an amenable number.

42631924 is a deficient number, since it is larger than the sum of its proper divisors (33197424).

42631924 is a wasteful number, since it uses less digits than its factorization.

42631924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174786 (or 174784 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 42631924 is about 6529.3126743938. The cubic root of 42631924 is about 349.3373147802.

The spelling of 42631924 in words is "forty-two million, six hundred thirty-one thousand, nine hundred twenty-four".