840102401197 has 2 divisors, whose sum is σ = 840102401198. Its totient is φ = 840102401196.

The previous prime is 840102401129. The next prime is 840102401227. The reversal of 840102401197 is 791104201048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 815600447236 + 24501953961 = 903106^2 + 156531^2 .

It is a cyclic number.

It is not a de Polignac number, because 840102401197 - 2¹⁹ = 840101876909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840102401497) 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, 420051200598 + 420051200599.

It is an arithmetic number, because the mean of its divisors is an integer number (420051200599).

Almost surely, 2^840102401197 is an apocalyptic number.

It is an amenable number.

840102401197 is a deficient number, since it is larger than the sum of its proper divisors (1).

840102401197 is an equidigital number, since it uses as much as digits as its factorization.

840102401197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 37.

The spelling of 840102401197 in words is "eight hundred forty billion, one hundred two million, four hundred one thousand, one hundred ninety-seven".