120718891 has 2 divisors, whose sum is σ = 120718892. Its totient is φ = 120718890.

The previous prime is 120718823. The next prime is 120718903. The reversal of 120718891 is 198817021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120718891 - 2¹⁹ = 120194603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120718891.

It is not a weakly prime, because it can be changed into another prime (120718291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60359445 + 60359446.

It is an arithmetic number, because the mean of its divisors is an integer number (60359446).

Almost surely, 2^120718891 is an apocalyptic number.

120718891 is a deficient number, since it is larger than the sum of its proper divisors (1).

120718891 is an equidigital number, since it uses as much as digits as its factorization.

120718891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 37.

The square root of 120718891 is about 10987.2148882235. The cubic root of 120718891 is about 494.2254198589.

The spelling of 120718891 in words is "one hundred twenty million, seven hundred eighteen thousand, eight hundred ninety-one".