123972446938 has 32 divisors (see below), whose sum is σ = 197841404880. Its totient is φ = 58178672640.

The previous prime is 123972446887. The next prime is 123972446953. The reversal of 123972446938 is 839644279321.

It can be written as a sum of positive squares in 8 ways, for example, as 78038098609 + 45934348329 = 279353^2 + 214323^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40470 + ... + 499582.

Almost surely, 2^123972446938 is an apocalyptic number.

123972446938 is a deficient number, since it is larger than the sum of its proper divisors (73868957942).

123972446938 is a wasteful number, since it uses less digits than its factorization.

123972446938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459282.

The product of its digits is 15676416, while the sum is 58.

The spelling of 123972446938 in words is "one hundred twenty-three billion, nine hundred seventy-two million, four hundred forty-six thousand, nine hundred thirty-eight".