242776229 has 2 divisors, whose sum is σ = 242776230. Its totient is φ = 242776228.

The previous prime is 242776207. The next prime is 242776231. The reversal of 242776229 is 922677242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140968129 + 101808100 = 11873^2 + 10090^2 .

It is a cyclic number.

It is not a de Polignac number, because 242776229 - 2²⁰ = 241727653 is a prime.

Together with 242776231, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242776249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121388114 + 121388115.

It is an arithmetic number, because the mean of its divisors is an integer number (121388115).

Almost surely, 2^242776229 is an apocalyptic number.

It is an amenable number.

242776229 is a deficient number, since it is larger than the sum of its proper divisors (1).

242776229 is an equidigital number, since it uses as much as digits as its factorization.

242776229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 41.

The square root of 242776229 is about 15581.2781568137. The cubic root of 242776229 is about 623.8335397605.

The spelling of 242776229 in words is "two hundred forty-two million, seven hundred seventy-six thousand, two hundred twenty-nine".