82142717 has 2 divisors, whose sum is σ = 82142718. Its totient is φ = 82142716.

The previous prime is 82142689. The next prime is 82142741. The reversal of 82142717 is 71724128.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81468676 + 674041 = 9026^2 + 821^2 .

It is a cyclic number.

It is not a de Polignac number, because 82142717 - 2²⁴ = 65365501 is a prime.

It is a super-2 number, since 2×82142717² = 13494851912284178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82142117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41071358 + 41071359.

It is an arithmetic number, because the mean of its divisors is an integer number (41071359).

Almost surely, 2^82142717 is an apocalyptic number.

It is an amenable number.

82142717 is a deficient number, since it is larger than the sum of its proper divisors (1).

82142717 is an equidigital number, since it uses as much as digits as its factorization.

82142717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6272, while the sum is 32.

The square root of 82142717 is about 9063.2619403833. The cubic root of 82142717 is about 434.7000477639.

The spelling of 82142717 in words is "eighty-two million, one hundred forty-two thousand, seven hundred seventeen".