120718139 has 4 divisors (see below), whose sum is σ = 127819224. Its totient is φ = 113617056.

The previous prime is 120718133. The next prime is 120718181. The reversal of 120718139 is 931817021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120718139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120718133) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3550517 + ... + 3550550.

It is an arithmetic number, because the mean of its divisors is an integer number (31954806).

Almost surely, 2^120718139 is an apocalyptic number.

120718139 is a deficient number, since it is larger than the sum of its proper divisors (7101085).

120718139 is an equidigital number, since it uses as much as digits as its factorization.

120718139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101084.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 120718139 is about 10987.1806665768. The cubic root of 120718139 is about 494.2243936227.

The spelling of 120718139 in words is "one hundred twenty million, seven hundred eighteen thousand, one hundred thirty-nine".