120201409 has 2 divisors, whose sum is σ = 120201410. Its totient is φ = 120201408.

The previous prime is 120201397. The next prime is 120201437. The reversal of 120201409 is 904102021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108743184 + 11458225 = 10428^2 + 3385^2 .

It is an emirp because it is prime and its reverse (904102021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120201409 - 2⁷ = 120201281 is a prime.

It is not a weakly prime, because it can be changed into another prime (120201449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60100704 + 60100705.

It is an arithmetic number, because the mean of its divisors is an integer number (60100705).

Almost surely, 2^120201409 is an apocalyptic number.

It is an amenable number.

120201409 is a deficient number, since it is larger than the sum of its proper divisors (1).

120201409 is an equidigital number, since it uses as much as digits as its factorization.

120201409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 120201409 is about 10963.6403169750. The cubic root of 120201409 is about 493.5182146818.

The spelling of 120201409 in words is "one hundred twenty million, two hundred one thousand, four hundred nine".