842100859 has 2 divisors, whose sum is σ = 842100860. Its totient is φ = 842100858.

The previous prime is 842100841. The next prime is 842100901. The reversal of 842100859 is 958001248.

842100859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 842100859 - 2¹¹ = 842098811 is a prime.

It is equal to p_43197616 and since 842100859 and 43197616 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (842100829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421050429 + 421050430.

It is an arithmetic number, because the mean of its divisors is an integer number (421050430).

Almost surely, 2^842100859 is an apocalyptic number.

842100859 is a deficient number, since it is larger than the sum of its proper divisors (1).

842100859 is an equidigital number, since it uses as much as digits as its factorization.

842100859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 842100859 is about 29018.9741203923. The cubic root of 842100859 is about 944.3247451585.

The spelling of 842100859 in words is "eight hundred forty-two million, one hundred thousand, eight hundred fifty-nine".