120104209 has 4 divisors (see below), whose sum is σ = 120127540. Its totient is φ = 120080880.

The previous prime is 120104207. The next prime is 120104213. The reversal of 120104209 is 902401021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 116964225 + 3139984 = 10815^2 + 1772^2 .

It is a cyclic number.

It is not a de Polignac number, because 120104209 - 2¹ = 120104207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120104207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162 + ... + 15499.

It is an arithmetic number, because the mean of its divisors is an integer number (30031885).

Almost surely, 2^120104209 is an apocalyptic number.

It is an amenable number.

120104209 is a deficient number, since it is larger than the sum of its proper divisors (23331).

120104209 is an equidigital number, since it uses as much as digits as its factorization.

120104209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23330.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 120104209 is about 10959.2065862452. The cubic root of 120104209 is about 493.3851521638.

It can be divided in two parts, 120 and 104209, that added together give a square (104329 = 323²).

The spelling of 120104209 in words is "one hundred twenty million, one hundred four thousand, two hundred nine".