120863915 has 4 divisors (see below), whose sum is σ = 145036704. Its totient is φ = 96691128.

The previous prime is 120863893. The next prime is 120863933. The reversal of 120863915 is 519368021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120863915 - 2¹⁰ = 120862891 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12086387 + ... + 12086396.

It is an arithmetic number, because the mean of its divisors is an integer number (36259176).

Almost surely, 2^120863915 is an apocalyptic number.

120863915 is a deficient number, since it is larger than the sum of its proper divisors (24172789).

120863915 is an equidigital number, since it uses as much as digits as its factorization.

120863915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24172788.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 120863915 is about 10993.8125779913. The cubic root of 120863915 is about 494.4232509911.

The spelling of 120863915 in words is "one hundred twenty million, eight hundred sixty-three thousand, nine hundred fifteen".