120232809 has 8 divisors (see below), whose sum is σ = 178122720. Its totient is φ = 80155188.

The previous prime is 120232807. The next prime is 120232813. The reversal of 120232809 is 908232021.

It is a happy number.

It is not a de Polignac number, because 120232809 - 2¹ = 120232807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4453067 = 120232809 / (1 + 2 + 0 + 2 + 3 + 2 + 8 + 0 + 9).

It is not an unprimeable number, because it can be changed into a prime (120232807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2226507 + ... + 2226560.

It is an arithmetic number, because the mean of its divisors is an integer number (22265340).

Almost surely, 2^120232809 is an apocalyptic number.

It is an amenable number.

120232809 is a deficient number, since it is larger than the sum of its proper divisors (57889911).

120232809 is an equidigital number, since it uses as much as digits as its factorization.

120232809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453076 (or 4453070 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 120232809 is about 10965.0722295843. The cubic root of 120232809 is about 493.5611845685.

The spelling of 120232809 in words is "one hundred twenty million, two hundred thirty-two thousand, eight hundred nine".