123865104 has 80 divisors (see below), whose sum is σ = 367476480. Its totient is φ = 35556480.

The previous prime is 123865099. The next prime is 123865117. The reversal of 123865104 is 401568321.

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, 3859 + ... + 16205.

It is an arithmetic number, because the mean of its divisors is an integer number (4593456).

Almost surely, 2^123865104 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 123865104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183738240).

123865104 is an abundant number, since it is smaller than the sum of its proper divisors (243611376).

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

123865104 is a wasteful number, since it uses less digits than its factorization.

123865104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12388 (or 12382 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 123865104 is about 11129.4700682467. The cubic root of 123865104 is about 498.4822025774.

The spelling of 123865104 in words is "one hundred twenty-three million, eight hundred sixty-five thousand, one hundred four".