138712 has 16 divisors (see below), whose sum is σ = 297360. Its totient is φ = 59424.

The previous prime is 138683. The next prime is 138727. The reversal of 138712 is 217831.

138712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

138712 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183 + ... + 1294.

It is an arithmetic number, because the mean of its divisors is an integer number (18585).

2¹³⁸⁷¹² is an apocalyptic number.

It is an amenable number.

138712 is an abundant number, since it is smaller than the sum of its proper divisors (158648).

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

138712 is a wasteful number, since it uses less digits than its factorization.

138712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490 (or 2486 counting only the distinct ones).

The product of its digits is 336, while the sum is 22.

The square root of 138712 is about 372.4405992907. The cubic root of 138712 is about 51.7652136962.

The spelling of 138712 in words is "one hundred thirty-eight thousand, seven hundred twelve".