842940671 has 2 divisors, whose sum is σ = 842940672. Its totient is φ = 842940670.

The previous prime is 842940667. The next prime is 842940691. The reversal of 842940671 is 176049248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 842940671 - 2² = 842940667 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842940641) 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, 421470335 + 421470336.

It is an arithmetic number, because the mean of its divisors is an integer number (421470336).

Almost surely, 2^842940671 is an apocalyptic number.

842940671 is a deficient number, since it is larger than the sum of its proper divisors (1).

842940671 is an equidigital number, since it uses as much as digits as its factorization.

842940671 is an odious number, because the sum of its binary digits is odd.

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

The square root of 842940671 is about 29033.4405642872. The cubic root of 842940671 is about 944.6385602070.

The spelling of 842940671 in words is "eight hundred forty-two million, nine hundred forty thousand, six hundred seventy-one".