842161673 has 2 divisors, whose sum is σ = 842161674. Its totient is φ = 842161672.

The previous prime is 842161667. The next prime is 842161703. The reversal of 842161673 is 376161248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 763803769 + 78357904 = 27637^2 + 8852^2 .

It is a cyclic number.

It is not a de Polignac number, because 842161673 - 2⁶ = 842161609 is a prime.

It is not a weakly prime, because it can be changed into another prime (842161613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421080836 + 421080837.

It is an arithmetic number, because the mean of its divisors is an integer number (421080837).

Almost surely, 2^842161673 is an apocalyptic number.

It is an amenable number.

842161673 is a deficient number, since it is larger than the sum of its proper divisors (1).

842161673 is an equidigital number, since it uses as much as digits as its factorization.

842161673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 842161673 is about 29020.0219331413. The cubic root of 842161673 is about 944.3474767122.

The spelling of 842161673 in words is "eight hundred forty-two million, one hundred sixty-one thousand, six hundred seventy-three".