42981084 has 24 divisors (see below), whose sum is σ = 111432720. Its totient is φ = 14326992.

The previous prime is 42981073. The next prime is 42981091. The reversal of 42981084 is 48018924.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 198879 + ... + 199094.

It is an arithmetic number, because the mean of its divisors is an integer number (4643030).

Almost surely, 2^42981084 is an apocalyptic number.

It is an amenable number.

42981084 is an abundant number, since it is smaller than the sum of its proper divisors (68451636).

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

42981084 is a wasteful number, since it uses less digits than its factorization.

42981084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397986 (or 397978 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 42981084 is about 6555.9960341660. The cubic root of 42981084 is about 350.2884261955.

The spelling of 42981084 in words is "forty-two million, nine hundred eighty-one thousand, eighty-four".