242307517 has 2 divisors, whose sum is σ = 242307518. Its totient is φ = 242307516.

The previous prime is 242307503. The next prime is 242307529. The reversal of 242307517 is 715703242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128799801 + 113507716 = 11349^2 + 10654^2 .

It is a cyclic number.

It is not a de Polignac number, because 242307517 - 2²⁷ = 108089789 is a prime.

It is a Chen prime.

It is equal to p_13281178 and since 242307517 and 13281178 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242307587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121153758 + 121153759.

It is an arithmetic number, because the mean of its divisors is an integer number (121153759).

Almost surely, 2^242307517 is an apocalyptic number.

It is an amenable number.

242307517 is a deficient number, since it is larger than the sum of its proper divisors (1).

242307517 is an equidigital number, since it uses as much as digits as its factorization.

242307517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 242307517 is about 15566.2300188581. The cubic root of 242307517 is about 623.4318164112.

The spelling of 242307517 in words is "two hundred forty-two million, three hundred seven thousand, five hundred seventeen".