840596143 has 2 divisors, whose sum is σ = 840596144. Its totient is φ = 840596142.

The previous prime is 840596123. The next prime is 840596149. The reversal of 840596143 is 341695048.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-840596143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 840596096 and 840596105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840596149) 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, 420298071 + 420298072.

It is an arithmetic number, because the mean of its divisors is an integer number (420298072).

Almost surely, 2^840596143 is an apocalyptic number.

840596143 is a deficient number, since it is larger than the sum of its proper divisors (1).

840596143 is an equidigital number, since it uses as much as digits as its factorization.

840596143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 840596143 is about 28993.0361121425. The cubic root of 840596143 is about 943.7619512368.

The spelling of 840596143 in words is "eight hundred forty million, five hundred ninety-six thousand, one hundred forty-three".