42631524 has 72 divisors (see below), whose sum is σ = 117778752. Its totient is φ = 12922560.

The previous prime is 42631507. The next prime is 42631531. The reversal of 42631524 is 42513624.

42631524 is a `hidden beast` number, since 4 + 2 + 631 + 5 + 24 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32587 + ... + 33869.

It is an arithmetic number, because the mean of its divisors is an integer number (1635816).

Almost surely, 2^42631524 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42631524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58889376).

42631524 is an abundant number, since it is smaller than the sum of its proper divisors (75147228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42631524 is a wasteful number, since it uses less digits than its factorization.

42631524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1372 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 42631524 is about 6529.2820432265. The cubic root of 42631524 is about 349.3362222080.

The spelling of 42631524 in words is "forty-two million, six hundred thirty-one thousand, five hundred twenty-four".