123030120120 has 64 divisors (see below), whose sum is σ = 388516176000. Its totient is φ = 31081292928.

The previous prime is 123030120071. The next prime is 123030120121. The reversal of 123030120120 is 21021030321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 123030120120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123030120121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26978010 + ... + 26982569.

It is an arithmetic number, because the mean of its divisors is an integer number (6070565250).

Almost surely, 2^123030120120 is an apocalyptic number.

123030120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123030120120 is an abundant number, since it is smaller than the sum of its proper divisors (265486055880).

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

123030120120 is a wasteful number, since it uses less digits than its factorization.

123030120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53960612 (or 53960608 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 123030120120 its reverse (21021030321), we get a palindrome (144051150441).

The spelling of 123030120120 in words is "one hundred twenty-three billion, thirty million, one hundred twenty thousand, one hundred twenty".