170427 has 4 divisors (see below), whose sum is σ = 227240. Its totient is φ = 113616.

The previous prime is 170413. The next prime is 170441. The reversal of 170427 is 724071.

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

It is an interprime number because it is at equal distance from previous prime (170413) and next prime (170441).

It is not a de Polignac number, because 170427 - 2⁶ = 170363 is a prime.

It is a D-number.

It is a Duffinian number.

170427 is a lucky number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (170447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28402 + ... + 28407.

It is an arithmetic number, because the mean of its divisors is an integer number (56810).

2¹⁷⁰⁴²⁷ is an apocalyptic number.

170427 is a deficient number, since it is larger than the sum of its proper divisors (56813).

170427 is an equidigital number, since it uses as much as digits as its factorization.

170427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56812.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 170427 is about 412.8280513725. The cubic root of 170427 is about 55.4429248492.

Adding to 170427 its reverse (724071), we get a palindrome (894498).

The spelling of 170427 in words is "one hundred seventy thousand, four hundred twenty-seven", and thus it is an iban number.