242240213 has 2 divisors, whose sum is σ = 242240214. Its totient is φ = 242240212.

The previous prime is 242240203. The next prime is 242240227. The reversal of 242240213 is 312042242.

242240213 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., 146845924 + 95394289 = 12118^2 + 9767^2 .

It is a cyclic number.

It is not a de Polignac number, because 242240213 - 2⁸ = 242239957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242240203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121120106 + 121120107.

It is an arithmetic number, because the mean of its divisors is an integer number (121120107).

Almost surely, 2^242240213 is an apocalyptic number.

It is an amenable number.

242240213 is a deficient number, since it is larger than the sum of its proper divisors (1).

242240213 is an equidigital number, since it uses as much as digits as its factorization.

242240213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 242240213 is about 15564.0680093605. The cubic root of 242240213 is about 623.3740890228.

Adding to 242240213 its reverse (312042242), we get a palindrome (554282455).

The spelling of 242240213 in words is "two hundred forty-two million, two hundred forty thousand, two hundred thirteen".