138144722 has 8 divisors (see below), whose sum is σ = 207404976. Its totient is φ = 69009732.

The previous prime is 138144707. The next prime is 138144757. The reversal of 138144722 is 227441831.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 28508 + ... + 32999.

It is an arithmetic number, because the mean of its divisors is an integer number (25925622).

Almost surely, 2^138144722 is an apocalyptic number.

138144722 is a deficient number, since it is larger than the sum of its proper divisors (69260254).

138144722 is a wasteful number, since it uses less digits than its factorization.

138144722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62632.

The product of its digits is 10752, while the sum is 32.

The square root of 138144722 is about 11753.4982877440. The cubic root of 138144722 is about 516.9455076647.

The spelling of 138144722 in words is "one hundred thirty-eight million, one hundred forty-four thousand, seven hundred twenty-two".