171243 has 12 divisors (see below), whose sum is σ = 252720. Its totient is φ = 111696.

The previous prime is 171233. The next prime is 171251. The reversal of 171243 is 342171.

It is not a de Polignac number, because 171243 - 2⁶ = 171179 is a prime.

It is an Ulam number.

171243 is a modest number, since divided by 243 gives 171 as remainder.

It is not an unprimeable number, because it can be changed into a prime (171203) 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 11 ways as a sum of consecutive naturals, for example, 298 + ... + 656.

It is an arithmetic number, because the mean of its divisors is an integer number (21060).

2¹⁷¹²⁴³ is an apocalyptic number.

171243 is a deficient number, since it is larger than the sum of its proper divisors (81477).

171243 is a wasteful number, since it uses less digits than its factorization.

171243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 415 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 171243 is about 413.8151761354. The cubic root of 171243 is about 55.5312704228.

It can be divided in two parts, 171 and 243, that added together give a palindrome (414).

The spelling of 171243 in words is "one hundred seventy-one thousand, two hundred forty-three", and thus it is an iban number.