139923712 has 36 divisors (see below), whose sum is σ = 280068880. Its totient is φ = 69769728.

The previous prime is 139923709. The next prime is 139923727. The reversal of 139923712 is 217329931.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158023 + ... + 158905.

Almost surely, 2^139923712 is an apocalyptic number.

It is an amenable number.

139923712 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

139923712 is an frugal number, since it uses more digits than its factorization.

139923712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518 (or 1504 counting only the distinct ones).

The product of its digits is 20412, while the sum is 37.

The square root of 139923712 is about 11828.9353705226. The cubic root of 139923712 is about 519.1550775748.

The spelling of 139923712 in words is "one hundred thirty-nine million, nine hundred twenty-three thousand, seven hundred twelve".