139331520 has 168 divisors, whose sum is σ = 484997760. Its totient is φ = 36710400.

The previous prime is 139331513. The next prime is 139331527. The reversal of 139331520 is 25133931.

It is a happy number.

139331520 is a `hidden beast` number, since 139 + 3 + 3 + 1 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (139331513) and next prime (139331527).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139331527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 290641 + ... + 291119.

Almost surely, 2^139331520 is an apocalyptic number.

139331520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139331520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242498880).

139331520 is an abundant number, since it is smaller than the sum of its proper divisors (345666240).

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

139331520 is a wasteful number, since it uses less digits than its factorization.

139331520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 139331520 is about 11803.8773290813. The cubic root of 139331520 is about 518.4216440437.

The spelling of 139331520 in words is "one hundred thirty-nine million, three hundred thirty-one thousand, five hundred twenty".