42621384 has 32 divisors (see below), whose sum is σ = 114750720. Its totient is φ = 13114176.

The previous prime is 42621379. The next prime is 42621391. The reversal of 42621384 is 48312624.

It is a nude number because it is divisible by every one of its digits.

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 7 ways as a sum of consecutive naturals, for example, 67992 + ... + 68615.

It is an arithmetic number, because the mean of its divisors is an integer number (3585960).

Almost surely, 2^42621384 is an apocalyptic number.

It is an amenable number.

42621384 is an abundant number, since it is smaller than the sum of its proper divisors (72129336).

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

42621384 is a wasteful number, since it uses less digits than its factorization.

42621384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136629 (or 136625 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 42621384 is about 6528.5054951344. The cubic root of 42621384 is about 349.3085232204.

The spelling of 42621384 in words is "forty-two million, six hundred twenty-one thousand, three hundred eighty-four".