45139120 has 40 divisors (see below), whose sum is σ = 113024016. Its totient is φ = 16666368.

The previous prime is 45139091. The next prime is 45139141. The reversal of 45139120 is 2193154.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

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, 20662 + ... + 22741.

Almost surely, 2^45139120 is an apocalyptic number.

45139120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45139120 is an abundant number, since it is smaller than the sum of its proper divisors (67884896).

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

45139120 is a wasteful number, since it uses less digits than its factorization.

45139120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43429 (or 43423 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 45139120 is about 6718.5653230433. The cubic root of 45139120 is about 356.0554978075.

The spelling of 45139120 in words is "forty-five million, one hundred thirty-nine thousand, one hundred twenty".