842156739899 has 2 divisors, whose sum is σ = 842156739900. Its totient is φ = 842156739898.

The previous prime is 842156739889. The next prime is 842156739901. The reversal of 842156739899 is 998937651248.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 842156739899 - 2⁴ = 842156739883 is a prime.

Together with 842156739901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (842156739889) 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, 421078369949 + 421078369950.

It is an arithmetic number, because the mean of its divisors is an integer number (421078369950).

Almost surely, 2^842156739899 is an apocalyptic number.

842156739899 is a deficient number, since it is larger than the sum of its proper divisors (1).

842156739899 is an equidigital number, since it uses as much as digits as its factorization.

842156739899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235146240, while the sum is 71.

The spelling of 842156739899 in words is "eight hundred forty-two billion, one hundred fifty-six million, seven hundred thirty-nine thousand, eight hundred ninety-nine".