42621952 has 44 divisors (see below), whose sum is σ = 86219640. Its totient is φ = 21057536.

The previous prime is 42621949. The next prime is 42621973. The reversal of 42621952 is 25912624.

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, 109374 + ... + 109762.

Almost surely, 2^42621952 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 42621952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43109820).

42621952 is an abundant number, since it is smaller than the sum of its proper divisors (43597688).

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

42621952 is a wasteful number, since it uses less digits than its factorization.

42621952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 498 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 42621952 is about 6528.5489965229. The cubic root of 42621952 is about 349.3100749169.

The spelling of 42621952 in words is "forty-two million, six hundred twenty-one thousand, nine hundred fifty-two".