342505717 has 2 divisors, whose sum is σ = 342505718. Its totient is φ = 342505716.

The previous prime is 342505703. The next prime is 342505721. The reversal of 342505717 is 717505243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 341843121 + 662596 = 18489^2 + 814^2 .

It is a cyclic number.

It is not a de Polignac number, because 342505717 - 2⁷ = 342505589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342505517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171252858 + 171252859.

It is an arithmetic number, because the mean of its divisors is an integer number (171252859).

Almost surely, 2^342505717 is an apocalyptic number.

It is an amenable number.

342505717 is a deficient number, since it is larger than the sum of its proper divisors (1).

342505717 is an equidigital number, since it uses as much as digits as its factorization.

342505717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 342505717 is about 18506.9099797886. The cubic root of 342505717 is about 699.6635914146.

The spelling of 342505717 in words is "three hundred forty-two million, five hundred five thousand, seven hundred seventeen".