242084209 has 2 divisors, whose sum is σ = 242084210. Its totient is φ = 242084208.

The previous prime is 242084153. The next prime is 242084251. The reversal of 242084209 is 902480242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235469025 + 6615184 = 15345^2 + 2572^2 .

It is a cyclic number.

It is not a de Polignac number, because 242084209 - 2⁹ = 242083697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242084009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121042104 + 121042105.

It is an arithmetic number, because the mean of its divisors is an integer number (121042105).

Almost surely, 2^242084209 is an apocalyptic number.

It is an amenable number.

242084209 is a deficient number, since it is larger than the sum of its proper divisors (1).

242084209 is an equidigital number, since it uses as much as digits as its factorization.

242084209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 242084209 is about 15559.0555304620. The cubic root of 242084209 is about 623.2402415305.

The spelling of 242084209 in words is "two hundred forty-two million, eighty-four thousand, two hundred nine".