139712524 has 18 divisors (see below), whose sum is σ = 284415180. Its totient is φ = 59876712.

The previous prime is 139712519. The next prime is 139712537. The reversal of 139712524 is 425217931.

It is a happy number.

139712524 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 139712524.

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 5 ways as a sum of consecutive naturals, for example, 356214 + ... + 356605.

Almost surely, 2^139712524 is an apocalyptic number.

139712524 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

139712524 is an abundant number, since it is smaller than the sum of its proper divisors (144702656).

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

139712524 is a wasteful number, since it uses less digits than its factorization.

139712524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712837 (or 712828 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 139712524 is about 11820.0052453457. The cubic root of 139712524 is about 518.8937577287.

The spelling of 139712524 in words is "one hundred thirty-nine million, seven hundred twelve thousand, five hundred twenty-four".