171238 has 4 divisors (see below), whose sum is σ = 256860. Its totient is φ = 85618.

The previous prime is 171233. The next prime is 171251. The reversal of 171238 is 832171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 832171 = 179 ⋅4649.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42808 + ... + 42811.

It is an arithmetic number, because the mean of its divisors is an integer number (64215).

2¹⁷¹²³⁸ is an apocalyptic number.

171238 is a deficient number, since it is larger than the sum of its proper divisors (85622).

171238 is an equidigital number, since it uses as much as digits as its factorization.

171238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85621.

The product of its digits is 336, while the sum is 22.

The square root of 171238 is about 413.8091347469. The cubic root of 171238 is about 55.5307299451.

It can be divided in two parts, 1712 and 38, that multiplied together give a palindrome (65056).

The spelling of 171238 in words is "one hundred seventy-one thousand, two hundred thirty-eight".