242505229 has 2 divisors, whose sum is σ = 242505230. Its totient is φ = 242505228.

The previous prime is 242505223. The next prime is 242505233. The reversal of 242505229 is 922505242.

242505229 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., 230979204 + 11526025 = 15198^2 + 3395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242505229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242505229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242505223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121252614 + 121252615.

It is an arithmetic number, because the mean of its divisors is an integer number (121252615).

Almost surely, 2^242505229 is an apocalyptic number.

It is an amenable number.

242505229 is a deficient number, since it is larger than the sum of its proper divisors (1).

242505229 is an equidigital number, since it uses as much as digits as its factorization.

242505229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 242505229 is about 15572.5793945640. The cubic root of 242505229 is about 623.6013343901.

The spelling of 242505229 in words is "two hundred forty-two million, five hundred five thousand, two hundred twenty-nine".