42556836 has 24 divisors (see below), whose sum is σ = 113485120. Its totient is φ = 12159072.

The previous prime is 42556823. The next prime is 42556841. The reversal of 42556836 is 63865524.

It is a super-2 number, since 2×42556836² = 3622168580661792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42556794 and 42556803.

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, 253231 + ... + 253398.

Almost surely, 2^42556836 is an apocalyptic number.

It is an amenable number.

42556836 is an abundant number, since it is smaller than the sum of its proper divisors (70928284).

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

42556836 is a wasteful number, since it uses less digits than its factorization.

42556836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506643 (or 506641 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 42556836 is about 6523.5600710042. The cubic root of 42556836 is about 349.1320972402.

The spelling of 42556836 in words is "forty-two million, five hundred fifty-six thousand, eight hundred thirty-six".