242022409 has 2 divisors, whose sum is σ = 242022410. Its totient is φ = 242022408.

The previous prime is 242022397. The next prime is 242022413. The reversal of 242022409 is 904220242.

It is a happy number.

242022409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134444025 + 107578384 = 11595^2 + 10372^2 .

It is a cyclic number.

It is not a de Polignac number, because 242022409 - 2⁷ = 242022281 is a prime.

It is not a weakly prime, because it can be changed into another prime (242020409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121011204 + 121011205.

It is an arithmetic number, because the mean of its divisors is an integer number (121011205).

Almost surely, 2^242022409 is an apocalyptic number.

It is an amenable number.

242022409 is a deficient number, since it is larger than the sum of its proper divisors (1).

242022409 is an equidigital number, since it uses as much as digits as its factorization.

242022409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 242022409 is about 15557.0694219702. The cubic root of 242022409 is about 623.1872027896.

The spelling of 242022409 in words is "two hundred forty-two million, twenty-two thousand, four hundred nine".