82142497 has 2 divisors, whose sum is σ = 82142498. Its totient is φ = 82142496.

The previous prime is 82142477. The next prime is 82142549. The reversal of 82142497 is 79424128.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44675856 + 37466641 = 6684^2 + 6121^2 .

It is a cyclic number.

It is not a de Polignac number, because 82142497 - 2⁷ = 82142369 is a prime.

It is equal to p_4787308 and since 82142497 and 4787308 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (82142477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41071248 + 41071249.

It is an arithmetic number, because the mean of its divisors is an integer number (41071249).

Almost surely, 2^82142497 is an apocalyptic number.

It is an amenable number.

82142497 is a deficient number, since it is larger than the sum of its proper divisors (1).

82142497 is an equidigital number, since it uses as much as digits as its factorization.

82142497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 82142497 is about 9063.2498034645. The cubic root of 82142497 is about 434.6996596829.

The spelling of 82142497 in words is "eighty-two million, one hundred forty-two thousand, four hundred ninety-seven".