123407871997120 has 56 divisors (see below), whose sum is σ = 299409617785104. Its totient is φ = 48431768626176.

The previous prime is 123407871997099. The next prime is 123407871997141. The reversal of 123407871997120 is 21799178704321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123407871997099) and next prime (123407871997141).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3638186814 + ... + 3638220733.

Almost surely, 2^{123407871997120} is an apocalyptic number.

123407871997120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123407871997120 is an abundant number, since it is smaller than the sum of its proper divisors (176001745787984).

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

123407871997120 is an equidigital number, since it uses as much as digits as its factorization.

123407871997120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7276407617 (or 7276407607 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 61.

The spelling of 123407871997120 in words is "one hundred twenty-three trillion, four hundred seven billion, eight hundred seventy-one million, nine hundred ninety-seven thousand, one hundred twenty".