842161667 has 2 divisors, whose sum is σ = 842161668. Its totient is φ = 842161666.

The previous prime is 842161613. The next prime is 842161673. The reversal of 842161667 is 766161248.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 842161667 - 2¹² = 842157571 is a prime.

It is not a weakly prime, because it can be changed into another prime (842169667) 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, 421080833 + 421080834.

It is an arithmetic number, because the mean of its divisors is an integer number (421080834).

Almost surely, 2^842161667 is an apocalyptic number.

842161667 is a deficient number, since it is larger than the sum of its proper divisors (1).

842161667 is an equidigital number, since it uses as much as digits as its factorization.

842161667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 842161667 is about 29020.0218297644. The cubic root of 842161667 is about 944.3474744695.

The spelling of 842161667 in words is "eight hundred forty-two million, one hundred sixty-one thousand, six hundred sixty-seven".