139712544 has 36 divisors (see below), whose sum is σ = 397308366. Its totient is φ = 46570752.

The previous prime is 139712537. The next prime is 139712561. The reversal of 139712544 is 445217931.

139712544 is a `hidden beast` number, since 13 + 97 + 12 + 544 = 666.

It can be written as a sum of positive squares in only one way, i.e., 139712400 + 144 = 11820^2 + 12^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 139712499 and 139712508.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 242269 + ... + 242844.

Almost surely, 2^139712544 is an apocalyptic number.

It is an amenable number.

139712544 is an abundant number, since it is smaller than the sum of its proper divisors (257595822).

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

139712544 is a wasteful number, since it uses less digits than its factorization.

139712544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485129 (or 485118 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 139712544 is about 11820.0060913690. The cubic root of 139712544 is about 518.8937824888.

The spelling of 139712544 in words is "one hundred thirty-nine million, seven hundred twelve thousand, five hundred forty-four".