123195992 has 8 divisors (see below), whose sum is σ = 230992500. Its totient is φ = 61597992.

The previous prime is 123195971. The next prime is 123196013. The reversal of 123195992 is 299591321.

It is an interprime number because it is at equal distance from previous prime (123195971) and next prime (123196013).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7699742 + ... + 7699757.

Almost surely, 2^123195992 is an apocalyptic number.

It is an amenable number.

123195992 is a deficient number, since it is larger than the sum of its proper divisors (107796508).

123195992 is a wasteful number, since it uses less digits than its factorization.

123195992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15399505 (or 15399501 counting only the distinct ones).

The product of its digits is 43740, while the sum is 41.

The square root of 123195992 is about 11099.3689910733. The cubic root of 123195992 is about 497.5829909613.

The spelling of 123195992 in words is "one hundred twenty-three million, one hundred ninety-five thousand, nine hundred ninety-two".