120530209 has 2 divisors, whose sum is σ = 120530210. Its totient is φ = 120530208.

The previous prime is 120530197. The next prime is 120530213. The reversal of 120530209 is 902035021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66830625 + 53699584 = 8175^2 + 7328^2 .

It is a cyclic number.

It is not a de Polignac number, because 120530209 - 2⁹ = 120529697 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120530209.

It is not a weakly prime, because it can be changed into another prime (120530279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60265104 + 60265105.

It is an arithmetic number, because the mean of its divisors is an integer number (60265105).

Almost surely, 2^120530209 is an apocalyptic number.

It is an amenable number.

120530209 is a deficient number, since it is larger than the sum of its proper divisors (1).

120530209 is an equidigital number, since it uses as much as digits as its factorization.

120530209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 120530209 is about 10978.6250960674. The cubic root of 120530209 is about 493.9677963676.

The spelling of 120530209 in words is "one hundred twenty million, five hundred thirty thousand, two hundred nine".