42621836 has 24 divisors (see below), whose sum is σ = 76226640. Its totient is φ = 20846592.

The previous prime is 42621823. The next prime is 42621857. The reversal of 42621836 is 63812624.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73580 + ... + 74156.

It is an arithmetic number, because the mean of its divisors is an integer number (3176110).

Almost surely, 2^42621836 is an apocalyptic number.

It is an amenable number.

42621836 is a deficient number, since it is larger than the sum of its proper divisors (33604804).

42621836 is a wasteful number, since it uses less digits than its factorization.

42621836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953 (or 951 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 42621836 is about 6528.5401124601. The cubic root of 42621836 is about 349.3097580222.

The spelling of 42621836 in words is "forty-two million, six hundred twenty-one thousand, eight hundred thirty-six".