123402980 has 24 divisors (see below), whose sum is σ = 260705088. Its totient is φ = 49064288.

The previous prime is 123402973. The next prime is 123403031. The reversal of 123402980 is 89204321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15134 + ... + 21813.

It is an arithmetic number, because the mean of its divisors is an integer number (10862712).

Almost surely, 2^123402980 is an apocalyptic number.

123402980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123402980 is an abundant number, since it is smaller than the sum of its proper divisors (137302108).

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

123402980 is a wasteful number, since it uses less digits than its factorization.

123402980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37123 (or 37121 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 123402980 is about 11108.6893916429. The cubic root of 123402980 is about 497.8615067326.

The spelling of 123402980 in words is "one hundred twenty-three million, four hundred two thousand, nine hundred eighty".