139128576 has 36 divisors (see below), whose sum is σ = 370286952. Its totient is φ = 46375936.

The previous prime is 139128553. The next prime is 139128637. The reversal of 139128576 is 675821931.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89811 + ... + 91346.

Almost surely, 2^139128576 is an apocalyptic number.

139128576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139128576 is an abundant number, since it is smaller than the sum of its proper divisors (231158376).

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

139128576 is an equidigital number, since it uses as much as digits as its factorization.

139128576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181176 (or 181162 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 139128576 is about 11795.2776991472. The cubic root of 139128576 is about 518.1698185531.

The spelling of 139128576 in words is "one hundred thirty-nine million, one hundred twenty-eight thousand, five hundred seventy-six".