120789517 has 12 divisors (see below), whose sum is σ = 128008380. Its totient is φ = 113959872.

The previous prime is 120789503. The next prime is 120789527. The reversal of 120789517 is 715987021.

It can be written as a sum of positive squares in 2 ways, for example, as 19766916 + 101022601 = 4446^2 + 10051^2 .

It is a de Polignac number, because none of the positive numbers 2^k-120789517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120789517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120789527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112459 + ... + 113527.

It is an arithmetic number, because the mean of its divisors is an integer number (10667365).

Almost surely, 2^120789517 is an apocalyptic number.

It is an amenable number.

120789517 is a deficient number, since it is larger than the sum of its proper divisors (7218863).

120789517 is a wasteful number, since it uses less digits than its factorization.

120789517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420 (or 1401 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 40.

The square root of 120789517 is about 10990.4284265901. The cubic root of 120789517 is about 494.3217824618.

The spelling of 120789517 in words is "one hundred twenty million, seven hundred eighty-nine thousand, five hundred seventeen".