120817285 has 8 divisors (see below), whose sum is σ = 145053216. Its totient is φ = 96605520.

The previous prime is 120817273. The next prime is 120817297. The reversal of 120817285 is 582718021.

It is an interprime number because it is at equal distance from previous prime (120817273) and next prime (120817297).

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

It is not a de Polignac number, because 120817285 - 2⁵ = 120817253 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 120817285.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7882 + ... + 17428.

It is an arithmetic number, because the mean of its divisors is an integer number (18131652).

Almost surely, 2^120817285 is an apocalyptic number.

It is an amenable number.

120817285 is a deficient number, since it is larger than the sum of its proper divisors (24235931).

120817285 is an equidigital number, since it uses as much as digits as its factorization.

120817285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12083.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 120817285 is about 10991.6916350487. The cubic root of 120817285 is about 494.3596590256.

The spelling of 120817285 in words is "one hundred twenty million, eight hundred seventeen thousand, two hundred eighty-five".