120797817 has 32 divisors (see below), whose sum is σ = 192872448. Its totient is φ = 65752896.

The previous prime is 120797813. The next prime is 120797819. The reversal of 120797817 is 718797021.

It is not a de Polignac number, because 120797817 - 2² = 120797813 is a prime.

It is a super-2 number, since 2×120797817² = 29184225183930978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120797813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184663 + ... + 185315.

It is an arithmetic number, because the mean of its divisors is an integer number (6027264).

Almost surely, 2^120797817 is an apocalyptic number.

It is an amenable number.

120797817 is a deficient number, since it is larger than the sum of its proper divisors (72074631).

120797817 is a wasteful number, since it uses less digits than its factorization.

120797817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069.

The product of its (nonzero) digits is 49392, while the sum is 42.

The square root of 120797817 is about 10990.8060213981. The cubic root of 120797817 is about 494.3331045724. Note that the first 3 decimals are identical.

The spelling of 120797817 in words is "one hundred twenty million, seven hundred ninety-seven thousand, eight hundred seventeen".