123038807920 has 120 divisors (see below), whose sum is σ = 335165266800. Its totient is φ = 41881061376.

The previous prime is 123038807917. The next prime is 123038807939. The reversal of 123038807920 is 29708830321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 431976 + ... + 657784.

It is an arithmetic number, because the mean of its divisors is an integer number (2793043890).

Almost surely, 2^123038807920 is an apocalyptic number.

123038807920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123038807920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167582633400).

123038807920 is an abundant number, since it is smaller than the sum of its proper divisors (212126458880).

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

123038807920 is a wasteful number, since it uses less digits than its factorization.

123038807920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225975 (or 225962 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 123038807920 in words is "one hundred twenty-three billion, thirty-eight million, eight hundred seven thousand, nine hundred twenty".