120204999 has 16 divisors (see below), whose sum is σ = 180230400. Its totient is φ = 79169688.

The previous prime is 120204983. The next prime is 120205021. The reversal of 120204999 is 999402021.

It is not a de Polignac number, because 120204999 - 2⁴ = 120204983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120204199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24579 + ... + 29060.

It is an arithmetic number, because the mean of its divisors is an integer number (11264400).

Almost surely, 2^120204999 is an apocalyptic number.

120204999 is a deficient number, since it is larger than the sum of its proper divisors (60025401).

120204999 is an equidigital number, since it uses as much as digits as its factorization.

120204999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53731 (or 53725 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 120204999 is about 10963.8040387449. The cubic root of 120204999 is about 493.5231278598.

The spelling of 120204999 in words is "one hundred twenty million, two hundred four thousand, nine hundred ninety-nine".