120612009 has 16 divisors (see below), whose sum is σ = 184088960. Its totient is φ = 68808960.

The previous prime is 120612001. The next prime is 120612043. The reversal of 120612009 is 900216021.

It is not a de Polignac number, because 120612009 - 2³ = 120612001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120612001) 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, 9537 + ... + 18225.

It is an arithmetic number, because the mean of its divisors is an integer number (11505560).

Almost surely, 2^120612009 is an apocalyptic number.

It is an amenable number.

120612009 is a deficient number, since it is larger than the sum of its proper divisors (63476951).

120612009 is an equidigital number, since it uses as much as digits as its factorization.

120612009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9360.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 120612009 is about 10982.3498851566. The cubic root of 120612009 is about 494.0795178153.

The spelling of 120612009 in words is "one hundred twenty million, six hundred twelve thousand, nine".