120860865 has 24 divisors (see below), whose sum is σ = 212022720. Its totient is φ = 63680544.

The previous prime is 120860849. The next prime is 120860867. The reversal of 120860865 is 568068021.

It is a happy number.

It is not a de Polignac number, because 120860865 - 2⁴ = 120860849 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120860867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12445 + ... + 19914.

It is an arithmetic number, because the mean of its divisors is an integer number (8834280).

Almost surely, 2^120860865 is an apocalyptic number.

120860865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120860865 is a deficient number, since it is larger than the sum of its proper divisors (91161855).

120860865 is a wasteful number, since it uses less digits than its factorization.

120860865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32453 (or 32450 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 120860865 is about 10993.6738627267. The cubic root of 120860865 is about 494.4190920338.

The spelling of 120860865 in words is "one hundred twenty million, eight hundred sixty thousand, eight hundred sixty-five".