123996980 has 48 divisors (see below), whose sum is σ = 276768576. Its totient is φ = 46502400.

The previous prime is 123996959. The next prime is 123996991. The reversal of 123996980 is 89699321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117455 + ... + 118505.

It is an arithmetic number, because the mean of its divisors is an integer number (5766012).

Almost surely, 2^123996980 is an apocalyptic number.

123996980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123996980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138384288).

123996980 is an abundant number, since it is smaller than the sum of its proper divisors (152771596).

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

123996980 is a wasteful number, since it uses less digits than its factorization.

123996980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424 (or 1422 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 123996980 is about 11135.3931228314. The cubic root of 123996980 is about 498.6590469046.

The spelling of 123996980 in words is "one hundred twenty-three million, nine hundred ninety-six thousand, nine hundred eighty".