120866715 has 16 divisors (see below), whose sum is σ = 214874400. Its totient is φ = 64462176.

The previous prime is 120866701. The next prime is 120866741. The reversal of 120866715 is 517668021.

It is not a de Polignac number, because 120866715 - 2⁹ = 120866203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120866715.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447520 + ... + 447789.

It is an arithmetic number, because the mean of its divisors is an integer number (13429650).

Almost surely, 2^120866715 is an apocalyptic number.

120866715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120866715 is a deficient number, since it is larger than the sum of its proper divisors (94007685).

120866715 is an equidigital number, since it uses as much as digits as its factorization.

120866715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895323 (or 895317 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 120866715 is about 10993.9399216114. The cubic root of 120866715 is about 494.4270689887.

The spelling of 120866715 in words is "one hundred twenty million, eight hundred sixty-six thousand, seven hundred fifteen".