242505223 has 2 divisors, whose sum is σ = 242505224. Its totient is φ = 242505222.

The previous prime is 242505203. The next prime is 242505229. The reversal of 242505223 is 322505242.

It is a happy number.

242505223 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242505223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242505229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121252611 + 121252612.

It is an arithmetic number, because the mean of its divisors is an integer number (121252612).

Almost surely, 2^242505223 is an apocalyptic number.

242505223 is a deficient number, since it is larger than the sum of its proper divisors (1).

242505223 is an equidigital number, since it uses as much as digits as its factorization.

242505223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 242505223 is about 15572.5792019177. The cubic root of 242505223 is about 623.6013292471.

The spelling of 242505223 in words is "two hundred forty-two million, five hundred five thousand, two hundred twenty-three".