123900980 has 48 divisors (see below), whose sum is σ = 298238976. Its totient is φ = 42355200.

The previous prime is 123900961. The next prime is 123901007. The reversal of 123900980 is 89009321.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

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, 55037 + ... + 57243.

It is an arithmetic number, because the mean of its divisors is an integer number (6213312).

Almost surely, 2^123900980 is an apocalyptic number.

123900980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123900980 is an abundant number, since it is smaller than the sum of its proper divisors (174337996).

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

123900980 is a wasteful number, since it uses less digits than its factorization.

123900980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624 (or 2622 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 123900980 is about 11131.0817084415. The cubic root of 123900980 is about 498.5303243395.

The spelling of 123900980 in words is "one hundred twenty-three million, nine hundred thousand, nine hundred eighty".