120556997 has 8 divisors (see below), whose sum is σ = 132995520. Its totient is φ = 108364960.

The previous prime is 120556991. The next prime is 120556999. The reversal of 120556997 is 799655021.

It is a happy number.

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

It is not a de Polignac number, because 120556997 - 2¹⁴ = 120540613 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 (120556991) 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, 60593 + ... + 62550.

It is an arithmetic number, because the mean of its divisors is an integer number (16624440).

Almost surely, 2^120556997 is an apocalyptic number.

It is an amenable number.

120556997 is a deficient number, since it is larger than the sum of its proper divisors (12438523).

120556997 is a wasteful number, since it uses less digits than its factorization.

120556997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123243.

The product of its (nonzero) digits is 170100, while the sum is 44.

The square root of 120556997 is about 10979.8450353363. The cubic root of 120556997 is about 494.0043886578.

The spelling of 120556997 in words is "one hundred twenty million, five hundred fifty-six thousand, nine hundred ninety-seven".