242612213 has 2 divisors, whose sum is σ = 242612214. Its totient is φ = 242612212.

The previous prime is 242612207. The next prime is 242612263. The reversal of 242612213 is 312216242.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176969809 + 65642404 = 13303^2 + 8102^2 .

It is a cyclic number.

It is not a de Polignac number, because 242612213 - 2¹⁶ = 242546677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242612203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121306106 + 121306107.

It is an arithmetic number, because the mean of its divisors is an integer number (121306107).

Almost surely, 2^242612213 is an apocalyptic number.

It is an amenable number.

242612213 is a deficient number, since it is larger than the sum of its proper divisors (1).

242612213 is an equidigital number, since it uses as much as digits as its factorization.

242612213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 242612213 is about 15576.0140279855. The cubic root of 242612213 is about 623.6930239000.

Adding to 242612213 its reverse (312216242), we get a palindrome (554828455).

The spelling of 242612213 in words is "two hundred forty-two million, six hundred twelve thousand, two hundred thirteen".