242808233 has 2 divisors, whose sum is σ = 242808234. Its totient is φ = 242808232.

The previous prime is 242808227. The next prime is 242808257. The reversal of 242808233 is 332808242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230219929 + 12588304 = 15173^2 + 3548^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242808233 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242808233.

It is not a weakly prime, because it can be changed into another prime (242808133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121404116 + 121404117.

It is an arithmetic number, because the mean of its divisors is an integer number (121404117).

Almost surely, 2^242808233 is an apocalyptic number.

It is an amenable number.

242808233 is a deficient number, since it is larger than the sum of its proper divisors (1).

242808233 is an equidigital number, since it uses as much as digits as its factorization.

242808233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 242808233 is about 15582.3051247240. The cubic root of 242808233 is about 623.8609508617.

Subtracting 242808233 from its reverse (332808242), we obtain a palindrome (90000009).

The spelling of 242808233 in words is "two hundred forty-two million, eight hundred eight thousand, two hundred thirty-three".