123999504 has 80 divisors (see below), whose sum is σ = 333312000. Its totient is φ = 39680640.

The previous prime is 123999497. The next prime is 123999521. The reversal of 123999504 is 405999321.

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, 248247 + ... + 248745.

It is an arithmetic number, because the mean of its divisors is an integer number (4166400).

Almost surely, 2^123999504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123999504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166656000).

123999504 is an abundant number, since it is smaller than the sum of its proper divisors (209312496).

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

123999504 is a wasteful number, since it uses less digits than its factorization.

123999504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 123999504 is about 11135.5064545803. The cubic root of 123999504 is about 498.6624303389.

The spelling of 123999504 in words is "one hundred twenty-three million, nine hundred ninety-nine thousand, five hundred four".