242945569 has 2 divisors, whose sum is σ = 242945570. Its totient is φ = 242945568.

The previous prime is 242945567. The next prime is 242945579. The reversal of 242945569 is 965549242.

242945569 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., 220968225 + 21977344 = 14865^2 + 4688^2 .

It is a cyclic number.

It is not a de Polignac number, because 242945569 - 2¹ = 242945567 is a prime.

It is a super-2 number, since 2×242945569² = 118045098993467522, which contains 22 as substring.

Together with 242945567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (242945567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121472784 + 121472785.

It is an arithmetic number, because the mean of its divisors is an integer number (121472785).

Almost surely, 2^242945569 is an apocalyptic number.

It is an amenable number.

242945569 is a deficient number, since it is larger than the sum of its proper divisors (1).

242945569 is an equidigital number, since it uses as much as digits as its factorization.

242945569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 46.

The square root of 242945569 is about 15586.7112952027. The cubic root of 242945569 is about 623.9785504146.

The spelling of 242945569 in words is "two hundred forty-two million, nine hundred forty-five thousand, five hundred sixty-nine".