242319617 has 2 divisors, whose sum is σ = 242319618. Its totient is φ = 242319616.

The previous prime is 242319607. The next prime is 242319619. The reversal of 242319617 is 716913242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159163456 + 83156161 = 12616^2 + 9119^2 .

It is a cyclic number.

It is not a de Polignac number, because 242319617 - 2²² = 238125313 is a prime.

Together with 242319619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242319619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121159808 + 121159809.

It is an arithmetic number, because the mean of its divisors is an integer number (121159809).

Almost surely, 2^242319617 is an apocalyptic number.

It is an amenable number.

242319617 is a deficient number, since it is larger than the sum of its proper divisors (1).

242319617 is an equidigital number, since it uses as much as digits as its factorization.

242319617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 242319617 is about 15566.6186758718. The cubic root of 242319617 is about 623.4421935820.

The spelling of 242319617 in words is "two hundred forty-two million, three hundred nineteen thousand, six hundred seventeen".