120555380 has 96 divisors (see below), whose sum is σ = 294174720. Its totient is φ = 41040000.

The previous prime is 120555377. The next prime is 120555439. The reversal of 120555380 is 83555021.

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, 631085 + ... + 631275.

It is an arithmetic number, because the mean of its divisors is an integer number (3064320).

Almost surely, 2^120555380 is an apocalyptic number.

120555380 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 120555380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147087360).

120555380 is an abundant number, since it is smaller than the sum of its proper divisors (173619340).

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

120555380 is a wasteful number, since it uses less digits than its factorization.

120555380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 120555380 is about 10979.7714001704. The cubic root of 120555380 is about 494.0021799966.

The spelling of 120555380 in words is "one hundred twenty million, five hundred fifty-five thousand, three hundred eighty".