138144332 has 12 divisors (see below), whose sum is σ = 242627280. Its totient is φ = 68822256.

The previous prime is 138144319. The next prime is 138144343. The reversal of 138144332 is 233441831.

It is a happy number.

138144332 is digitally balanced in base 2, 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 = 138144295 and 138144304.

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, 61232 + ... + 63447.

It is an arithmetic number, because the mean of its divisors is an integer number (20218940).

Almost surely, 2^138144332 is an apocalyptic number.

It is an amenable number.

138144332 is a deficient number, since it is larger than the sum of its proper divisors (104482948).

138144332 is a wasteful number, since it uses less digits than its factorization.

138144332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124960 (or 124958 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 138144332 is about 11753.4816969271. The cubic root of 138144332 is about 516.9450211968.

The spelling of 138144332 in words is "one hundred thirty-eight million, one hundred forty-four thousand, three hundred thirty-two".