120010409 has 2 divisors, whose sum is σ = 120010410. Its totient is φ = 120010408.

The previous prime is 120010313. The next prime is 120010433. The reversal of 120010409 is 904010021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99940009 + 20070400 = 9997^2 + 4480^2 .

It is a cyclic number.

It is not a de Polignac number, because 120010409 - 2⁸ = 120010153 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (120010459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60005204 + 60005205.

It is an arithmetic number, because the mean of its divisors is an integer number (60005205).

Almost surely, 2^120010409 is an apocalyptic number.

It is an amenable number.

120010409 is a deficient number, since it is larger than the sum of its proper divisors (1).

120010409 is an equidigital number, since it uses as much as digits as its factorization.

120010409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 120010409 is about 10954.9262434760. The cubic root of 120010409 is about 493.2566760101.

The spelling of 120010409 in words is "one hundred twenty million, ten thousand, four hundred nine".