123320120 has 64 divisors (see below), whose sum is σ = 345945600. Its totient is φ = 38436480.

The previous prime is 123320117. The next prime is 123320137. The reversal of 123320120 is 21023321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 123320095 and 123320104.

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, 16940 + ... + 23099.

It is an arithmetic number, because the mean of its divisors is an integer number (5405400).

Almost surely, 2^123320120 is an apocalyptic number.

123320120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123320120 is an abundant number, since it is smaller than the sum of its proper divisors (222625480).

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

123320120 is a wasteful number, since it uses less digits than its factorization.

123320120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40068 (or 40064 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 123320120 is about 11104.9592525142. The cubic root of 123320120 is about 497.7500506422.

Adding to 123320120 its reverse (21023321), we get a palindrome (144343441).

The spelling of 123320120 in words is "one hundred twenty-three million, three hundred twenty thousand, one hundred twenty".