120001909 has 4 divisors (see below), whose sum is σ = 120069280. Its totient is φ = 119934540.

The previous prime is 120001883. The next prime is 120001939. The reversal of 120001909 is 909100021.

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 a cyclic number.

It is not a de Polignac number, because 120001909 - 2⁵ = 120001877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120001909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001939) 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, 30939 + ... + 34600.

It is an arithmetic number, because the mean of its divisors is an integer number (30017320).

Almost surely, 2^120001909 is an apocalyptic number.

It is an amenable number.

120001909 is a deficient number, since it is larger than the sum of its proper divisors (67371).

120001909 is an equidigital number, since it uses as much as digits as its factorization.

120001909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67370.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 120001909 is about 10954.5382832870. The cubic root of 120001909 is about 493.2450304071.

The spelling of 120001909 in words is "one hundred twenty million, one thousand, nine hundred nine".