123742115180 has 24 divisors (see below), whose sum is σ = 259865277840. Its totient is φ = 49495544000.

The previous prime is 123742115179. The next prime is 123742115191. The reversal of 123742115180 is 81511247321.

It is a super-2 number, since 2×123742115180² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123742115180.

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, 1159055 + ... + 1261305.

It is an arithmetic number, because the mean of its divisors is an integer number (10827719910).

Almost surely, 2^123742115180 is an apocalyptic number.

123742115180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123742115180 is an abundant number, since it is smaller than the sum of its proper divisors (136123162660).

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

123742115180 is a wasteful number, since it uses less digits than its factorization.

123742115180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162769 (or 162767 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 123742115180 in words is "one hundred twenty-three billion, seven hundred forty-two million, one hundred fifteen thousand, one hundred eighty".