120778013 has 12 divisors (see below), whose sum is σ = 131297760. Its totient is φ = 111018432.

The previous prime is 120778001. The next prime is 120778039. The reversal of 120778013 is 310877021.

It is not a de Polignac number, because 120778013 - 2⁴ = 120777997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120778093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7568 + ... + 17286.

It is an arithmetic number, because the mean of its divisors is an integer number (10941480).

Almost surely, 2^120778013 is an apocalyptic number.

It is an amenable number.

120778013 is a deficient number, since it is larger than the sum of its proper divisors (10519747).

120778013 is an equidigital number, since it uses as much as digits as its factorization.

120778013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9796 (or 9779 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 120778013 is about 10989.9050496353. The cubic root of 120778013 is about 494.3060888860.

The spelling of 120778013 in words is "one hundred twenty million, seven hundred seventy-eight thousand, thirteen".