120104409 has 4 divisors (see below), whose sum is σ = 160139216. Its totient is φ = 80069604.

The previous prime is 120104407. The next prime is 120104419. The reversal of 120104409 is 904401021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 120104409 - 2¹ = 120104407 is a prime.

It is a super-2 number, since 2×120104409² = 28850138122478562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120104407) 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, 20017399 + ... + 20017404.

It is an arithmetic number, because the mean of its divisors is an integer number (40034804).

Almost surely, 2^120104409 is an apocalyptic number.

It is an amenable number.

120104409 is a deficient number, since it is larger than the sum of its proper divisors (40034807).

120104409 is an equidigital number, since it uses as much as digits as its factorization.

120104409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40034806.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 120104409 is about 10959.2157109895. The cubic root of 120104409 is about 493.3854260287.

The spelling of 120104409 in words is "one hundred twenty million, one hundred four thousand, four hundred nine".