170042017 has 4 divisors (see below), whose sum is σ = 172090800. Its totient is φ = 167993236.

The previous prime is 170042011. The next prime is 170042029. The reversal of 170042017 is 710240071.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-170042017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170042011) 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, 1024267 + ... + 1024432.

It is an arithmetic number, because the mean of its divisors is an integer number (43022700).

Almost surely, 2^170042017 is an apocalyptic number.

It is an amenable number.

170042017 is a deficient number, since it is larger than the sum of its proper divisors (2048783).

170042017 is an equidigital number, since it uses as much as digits as its factorization.

170042017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048782.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 170042017 is about 13040.0159892540. The cubic root of 170042017 is about 554.0114610965.

Adding to 170042017 its reverse (710240071), we get a palindrome (880282088).

The spelling of 170042017 in words is "one hundred seventy million, forty-two thousand, seventeen".