242305669 has 2 divisors, whose sum is σ = 242305670. Its totient is φ = 242305668.

The previous prime is 242305639. The next prime is 242305681. The reversal of 242305669 is 966503242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229128769 + 13176900 = 15137^2 + 3630^2 .

It is a cyclic number.

It is not a de Polignac number, because 242305669 - 2⁷ = 242305541 is a prime.

It is a super-2 number, since 2×242305669² = 117424074459075122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242305619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121152834 + 121152835.

It is an arithmetic number, because the mean of its divisors is an integer number (121152835).

Almost surely, 2^242305669 is an apocalyptic number.

It is an amenable number.

242305669 is a deficient number, since it is larger than the sum of its proper divisors (1).

242305669 is an equidigital number, since it uses as much as digits as its factorization.

242305669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 242305669 is about 15566.1706594782. The cubic root of 242305669 is about 623.4302315038.

The spelling of 242305669 in words is "two hundred forty-two million, three hundred five thousand, six hundred sixty-nine".