120555399 has 8 divisors (see below), whose sum is σ = 169200640. Its totient is φ = 76140216.

The previous prime is 120555377. The next prime is 120555439. The reversal of 120555399 is 993555021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120555399 - 2⁵ = 120555367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120555319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057447 + ... + 1057560.

It is an arithmetic number, because the mean of its divisors is an integer number (21150080).

Almost surely, 2^120555399 is an apocalyptic number.

120555399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

120555399 is a deficient number, since it is larger than the sum of its proper divisors (48645241).

120555399 is a wasteful number, since it uses less digits than its factorization.

120555399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115029.

The product of its (nonzero) digits is 60750, while the sum is 39.

The square root of 120555399 is about 10979.7722653979. The cubic root of 120555399 is about 494.0022059488.

The spelling of 120555399 in words is "one hundred twenty million, five hundred fifty-five thousand, three hundred ninety-nine".