138012532 has 24 divisors (see below), whose sum is σ = 276756480. Its totient is φ = 58991520.

The previous prime is 138012529. The next prime is 138012533. The reversal of 138012532 is 235210831.

138012532 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 138012497 and 138012506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138012533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4557 + ... + 17227.

It is an arithmetic number, because the mean of its divisors is an integer number (11531520).

Almost surely, 2^138012532 is an apocalyptic number.

It is an amenable number.

138012532 is an abundant number, since it is smaller than the sum of its proper divisors (138743948).

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

138012532 is a wasteful number, since it uses less digits than its factorization.

138012532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13071 (or 13069 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 138012532 is about 11747.8735097038. The cubic root of 138012532 is about 516.7805675118.

The spelling of 138012532 in words is "one hundred thirty-eight million, twelve thousand, five hundred thirty-two".