120204189 has 32 divisors (see below), whose sum is σ = 204042240. Its totient is φ = 68512176.

The previous prime is 120204179. The next prime is 120204197. The reversal of 120204189 is 981402021.

It is not a de Polignac number, because 120204189 - 2⁴ = 120204173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120204179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121792 + ... + 122774.

It is an arithmetic number, because the mean of its divisors is an integer number (6376320).

Almost surely, 2^120204189 is an apocalyptic number.

It is an amenable number.

120204189 is a deficient number, since it is larger than the sum of its proper divisors (83838051).

120204189 is an equidigital number, since it uses as much as digits as its factorization.

120204189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646 (or 1640 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 120204189 is about 10963.7670989492. The cubic root of 120204189 is about 493.5220193241.

The spelling of 120204189 in words is "one hundred twenty million, two hundred four thousand, one hundred eighty-nine".