42561384 has 32 divisors (see below), whose sum is σ = 106799040. Its totient is φ = 14134400.

The previous prime is 42561377. The next prime is 42561391. The reversal of 42561384 is 48316524.

42561384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42561377) and next prime (42561391).

It is a super-2 number, since 2×42561384² = 3622942815990912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3589 + ... + 9899.

It is an arithmetic number, because the mean of its divisors is an integer number (3337470).

Almost surely, 2^42561384 is an apocalyptic number.

It is an amenable number.

42561384 is an abundant number, since it is smaller than the sum of its proper divisors (64237656).

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

42561384 is a wasteful number, since it uses less digits than its factorization.

42561384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6601 (or 6597 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 42561384 is about 6523.9086443634. The cubic root of 42561384 is about 349.1445339121.

The spelling of 42561384 in words is "forty-two million, five hundred sixty-one thousand, three hundred eighty-four".