170742871 has 4 divisors (see below), whose sum is σ = 183876952. Its totient is φ = 157608792.

The previous prime is 170742841. The next prime is 170742877. The reversal of 170742871 is 178247071.

170742871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 170742871 - 2⁹ = 170742359 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 170742871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170742877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6567021 + ... + 6567046.

It is an arithmetic number, because the mean of its divisors is an integer number (45969238).

Almost surely, 2^170742871 is an apocalyptic number.

170742871 is a deficient number, since it is larger than the sum of its proper divisors (13134081).

170742871 is a wasteful number, since it uses less digits than its factorization.

170742871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13134080.

The product of its (nonzero) digits is 21952, while the sum is 37.

The square root of 170742871 is about 13066.8615589207. The cubic root of 170742871 is about 554.7715652173.

The spelling of 170742871 in words is "one hundred seventy million, seven hundred forty-two thousand, eight hundred seventy-one".