139071520 has 48 divisors (see below), whose sum is σ = 375496128. Its totient is φ = 47681280.

The previous prime is 139071481. The next prime is 139071533. The reversal of 139071520 is 25170931.

It is a super-2 number, since 2×139071520² = 38681775350220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 60966 + ... + 63205.

It is an arithmetic number, because the mean of its divisors is an integer number (7822836).

Almost surely, 2^139071520 is an apocalyptic number.

139071520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139071520 is an abundant number, since it is smaller than the sum of its proper divisors (236424608).

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

139071520 is a wasteful number, since it uses less digits than its factorization.

139071520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124193 (or 124185 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 139071520 is about 11792.8588561044. The cubic root of 139071520 is about 518.0989758348.

The spelling of 139071520 in words is "one hundred thirty-nine million, seventy-one thousand, five hundred twenty".