120660009 has 8 divisors (see below), whose sum is σ = 160930752. Its totient is φ = 80414640.

The previous prime is 120659993. The next prime is 120660017. The reversal of 120660009 is 900066021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120660009 - 2⁴ = 120659993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120660079) 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, 15747 + ... + 22119.

It is an arithmetic number, because the mean of its divisors is an integer number (20116344).

Almost surely, 2^120660009 is an apocalyptic number.

It is an amenable number.

120660009 is a deficient number, since it is larger than the sum of its proper divisors (40270743).

120660009 is an equidigital number, since it uses as much as digits as its factorization.

120660009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12687.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 120660009 is about 10984.5349924337. The cubic root of 120660009 is about 494.1450521173.

The spelling of 120660009 in words is "one hundred twenty million, six hundred sixty thousand, nine".