242022397 has 2 divisors, whose sum is σ = 242022398. Its totient is φ = 242022396.

The previous prime is 242022373. The next prime is 242022409. The reversal of 242022397 is 793220242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241926916 + 95481 = 15554^2 + 309^2 .

It is a cyclic number.

It is not a de Polignac number, because 242022397 - 2⁷ = 242022269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242022367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121011198 + 121011199.

It is an arithmetic number, because the mean of its divisors is an integer number (121011199).

Almost surely, 2^242022397 is an apocalyptic number.

It is an amenable number.

242022397 is a deficient number, since it is larger than the sum of its proper divisors (1).

242022397 is an equidigital number, since it uses as much as digits as its factorization.

242022397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 242022397 is about 15557.0690362934. The cubic root of 242022397 is about 623.1871924899.

The spelling of 242022397 in words is "two hundred forty-two million, twenty-two thousand, three hundred ninety-seven".