123389504 has 28 divisors (see below), whose sum is σ = 279830784. Its totient is φ = 52881024.

The previous prime is 123389501. The next prime is 123389527. The reversal of 123389504 is 405983321.

It is a tau number, because it is divible by the number of its divisors (28).

It is not an unprimeable number, because it can be changed into a prime (123389501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137264 + ... + 138159.

Almost surely, 2^123389504 is an apocalyptic number.

123389504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123389504 is an abundant number, since it is smaller than the sum of its proper divisors (156441280).

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

123389504 is an equidigital number, since it uses as much as digits as its factorization.

123389504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275442 (or 275432 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 123389504 is about 11108.0828228817. The cubic root of 123389504 is about 497.8433833834.

The spelling of 123389504 in words is "one hundred twenty-three million, three hundred eighty-nine thousand, five hundred four".