170423 has 4 divisors (see below), whose sum is σ = 185928. Its totient is φ = 154920.

The previous prime is 170413. The next prime is 170441. The reversal of 170423 is 324071.

It is a happy number.

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 170423 - 2⁸ = 170167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 170423.

It is not an unprimeable number, because it can be changed into a prime (170413) 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, 7736 + ... + 7757.

It is an arithmetic number, because the mean of its divisors is an integer number (46482).

2¹⁷⁰⁴²³ is an apocalyptic number.

170423 is a deficient number, since it is larger than the sum of its proper divisors (15505).

170423 is a wasteful number, since it uses less digits than its factorization.

170423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15504.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 170423 is about 412.8232067120. The cubic root of 170423 is about 55.4424910888.

Adding to 170423 its reverse (324071), we get a palindrome (494494).

The spelling of 170423 in words is "one hundred seventy thousand, four hundred twenty-three", and thus it is an iban number.