120750556420 has 96 divisors (see below), whose sum is σ = 274476480768. Its totient is φ = 44357724672.

The previous prime is 120750556391. The next prime is 120750556447. The reversal of 120750556420 is 24655057021.

It is a self number, because there is not a number n which added to its sum of digits gives 120750556420.

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, 67570767 + ... + 67572553.

It is an arithmetic number, because the mean of its divisors is an integer number (2859130008).

Almost surely, 2^120750556420 is an apocalyptic number.

120750556420 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 120750556420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137238240384).

120750556420 is an abundant number, since it is smaller than the sum of its proper divisors (153725924348).

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

120750556420 is a wasteful number, since it uses less digits than its factorization.

120750556420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2989 (or 2987 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 120750556420 in words is "one hundred twenty billion, seven hundred fifty million, five hundred fifty-six thousand, four hundred twenty".