123881178 has 16 divisors (see below), whose sum is σ = 260802720. Its totient is φ = 39120336.

The previous prime is 123881171. The next prime is 123881201. The reversal of 123881178 is 871188321.

It is not an unprimeable number, because it can be changed into a prime (123881171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543225 + ... + 543452.

It is an arithmetic number, because the mean of its divisors is an integer number (16300170).

Almost surely, 2^123881178 is an apocalyptic number.

123881178 is an abundant number, since it is smaller than the sum of its proper divisors (136921542).

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

123881178 is a wasteful number, since it uses less digits than its factorization.

123881178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086701.

The product of its digits is 21504, while the sum is 39.

The square root of 123881178 is about 11130.1921816292. The cubic root of 123881178 is about 498.5037643573.

The spelling of 123881178 in words is "one hundred twenty-three million, eight hundred eighty-one thousand, one hundred seventy-eight".