170642159 has 2 divisors, whose sum is σ = 170642160. Its totient is φ = 170642158.

The previous prime is 170642149. The next prime is 170642161. The reversal of 170642159 is 951246071.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 170642159 - 2²⁰ = 169593583 is a prime.

It is a Sophie Germain prime.

Together with 170642161, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170642149) 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, 85321079 + 85321080.

It is an arithmetic number, because the mean of its divisors is an integer number (85321080).

Almost surely, 2^170642159 is an apocalyptic number.

170642159 is a deficient number, since it is larger than the sum of its proper divisors (1).

170642159 is an equidigital number, since it uses as much as digits as its factorization.

170642159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 170642159 is about 13063.0072724469. The cubic root of 170642159 is about 554.6624671673.

The spelling of 170642159 in words is "one hundred seventy million, six hundred forty-two thousand, one hundred fifty-nine".