123112120 has 16 divisors (see below), whose sum is σ = 277002360. Its totient is φ = 49244832.

The previous prime is 123112103. The next prime is 123112151. The reversal of 123112120 is 21211321.

It is a self number, because there is not a number n which added to its sum of digits gives 123112120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1538862 + ... + 1538941.

Almost surely, 2^123112120 is an apocalyptic number.

123112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123112120 is an abundant number, since it is smaller than the sum of its proper divisors (153890240).

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

123112120 is a wasteful number, since it uses less digits than its factorization.

123112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3077814 (or 3077810 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 123112120 is about 11095.5901149961. The cubic root of 123112120 is about 497.4700469328.

Adding to 123112120 its reverse (21211321), we get a palindrome (144323441).

The spelling of 123112120 in words is "one hundred twenty-three million, one hundred twelve thousand, one hundred twenty".