842810497 has 2 divisors, whose sum is σ = 842810498. Its totient is φ = 842810496.

The previous prime is 842810483. The next prime is 842810503. The reversal of 842810497 is 794018248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 712302721 + 130507776 = 26689^2 + 11424^2 .

It is a cyclic number.

It is not a de Polignac number, because 842810497 - 2¹⁹ = 842286209 is a prime.

It is not a weakly prime, because it can be changed into another prime (842810447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421405248 + 421405249.

It is an arithmetic number, because the mean of its divisors is an integer number (421405249).

Almost surely, 2^842810497 is an apocalyptic number.

It is an amenable number.

842810497 is a deficient number, since it is larger than the sum of its proper divisors (1).

842810497 is an equidigital number, since it uses as much as digits as its factorization.

842810497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 842810497 is about 29031.1986834853. The cubic root of 842810497 is about 944.5899313554.

The spelling of 842810497 in words is "eight hundred forty-two million, eight hundred ten thousand, four hundred ninety-seven".