139712432 has 10 divisors (see below), whose sum is σ = 270692868. Its totient is φ = 69856208.

The previous prime is 139712423. The next prime is 139712471. The reversal of 139712432 is 234217931.

139712432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4365998 + ... + 4366029.

Almost surely, 2^139712432 is an apocalyptic number.

It is an amenable number.

139712432 is a deficient number, since it is larger than the sum of its proper divisors (130980436).

139712432 is an equidigital number, since it uses as much as digits as its factorization.

139712432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8732035 (or 8732029 counting only the distinct ones).

The product of its digits is 9072, while the sum is 32.

The square root of 139712432 is about 11820.0013536378. The cubic root of 139712432 is about 518.8936438324.

Subtracting from 139712432 its sum of digits (32), we obtain a square (139712400 = 11820²).

The spelling of 139712432 in words is "one hundred thirty-nine million, seven hundred twelve thousand, four hundred thirty-two".