842693843 has 2 divisors, whose sum is σ = 842693844. Its totient is φ = 842693842.

The previous prime is 842693821. The next prime is 842693897. The reversal of 842693843 is 348396248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 842693843 - 2¹⁰ = 842692819 is a prime.

It is not a weakly prime, because it can be changed into another prime (842693143) 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, 421346921 + 421346922.

It is an arithmetic number, because the mean of its divisors is an integer number (421346922).

Almost surely, 2^842693843 is an apocalyptic number.

842693843 is a deficient number, since it is larger than the sum of its proper divisors (1).

842693843 is an equidigital number, since it uses as much as digits as its factorization.

842693843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 47.

The square root of 842693843 is about 29029.1894995365. The cubic root of 842693843 is about 944.5463488899.

The spelling of 842693843 in words is "eight hundred forty-two million, six hundred ninety-three thousand, eight hundred forty-three".