123423516120 has 128 divisors (see below), whose sum is σ = 375831576000. Its totient is φ = 32421396480.

The previous prime is 123423516109. The next prime is 123423516133. The reversal of 123423516120 is 21615324321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2851440 + ... + 2894400.

Almost surely, 2^123423516120 is an apocalyptic number.

123423516120 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 123423516120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187915788000).

123423516120 is an abundant number, since it is smaller than the sum of its proper divisors (252408059880).

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

123423516120 is a wasteful number, since it uses less digits than its factorization.

123423516120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43333 (or 43329 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 123423516120 in words is "one hundred twenty-three billion, four hundred twenty-three million, five hundred sixteen thousand, one hundred twenty".