242244209 has 2 divisors, whose sum is σ = 242244210. Its totient is φ = 242244208.

The previous prime is 242244193. The next prime is 242244227. The reversal of 242244209 is 902442242.

242244209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127690000 + 114554209 = 11300^2 + 10703^2 .

It is a cyclic number.

It is not a de Polignac number, because 242244209 - 2⁴ = 242244193 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 (242244229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121122104 + 121122105.

It is an arithmetic number, because the mean of its divisors is an integer number (121122105).

Almost surely, 2^242244209 is an apocalyptic number.

It is an amenable number.

242244209 is a deficient number, since it is larger than the sum of its proper divisors (1).

242244209 is an equidigital number, since it uses as much as digits as its factorization.

242244209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 242244209 is about 15564.1963814390. The cubic root of 242244209 is about 623.3775167349.

The spelling of 242244209 in words is "two hundred forty-two million, two hundred forty-four thousand, two hundred nine".