120191623 has 4 divisors (see below), whose sum is σ = 123123168. Its totient is φ = 117260080.

The previous prime is 120191611. The next prime is 120191641. The reversal of 120191623 is 326191021.

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 120191623 - 2²⁵ = 86637191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120191723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1465711 + ... + 1465792.

It is an arithmetic number, because the mean of its divisors is an integer number (30780792).

Almost surely, 2^120191623 is an apocalyptic number.

120191623 is a deficient number, since it is larger than the sum of its proper divisors (2931545).

120191623 is an equidigital number, since it uses as much as digits as its factorization.

120191623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931544.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 120191623 is about 10963.1940145197. The cubic root of 120191623 is about 493.5048213271.

The spelling of 120191623 in words is "one hundred twenty million, one hundred ninety-one thousand, six hundred twenty-three".