123194980 has 24 divisors (see below), whose sum is σ = 259133112. Its totient is φ = 49197312.

The previous prime is 123194893. The next prime is 123194989. The reversal of 123194980 is 89491321.

It can be written as a sum of positive squares in 4 ways, for example, as 9474084 + 113720896 = 3078^2 + 10664^2 .

It is not an unprimeable number, because it can be changed into a prime (123194989) 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, 8344 + ... + 17776.

It is an arithmetic number, because the mean of its divisors is an integer number (10797213).

Almost surely, 2^123194980 is an apocalyptic number.

123194980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123194980 is an abundant number, since it is smaller than the sum of its proper divisors (135938132).

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

123194980 is a wasteful number, since it uses less digits than its factorization.

123194980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10095 (or 10093 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 123194980 is about 11099.3234028025. The cubic root of 123194980 is about 497.5816284836.

The spelling of 123194980 in words is "one hundred twenty-three million, one hundred ninety-four thousand, nine hundred eighty".