171442 has 8 divisors (see below), whose sum is σ = 268416. Its totient is φ = 81972.

The previous prime is 171439. The next prime is 171449. The reversal of 171442 is 244171.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (171449) 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, 1818 + ... + 1909.

It is an arithmetic number, because the mean of its divisors is an integer number (33552).

2¹⁷¹⁴⁴² is an apocalyptic number.

171442 is a deficient number, since it is larger than the sum of its proper divisors (96974).

171442 is a wasteful number, since it uses less digits than its factorization.

171442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752.

The product of its digits is 224, while the sum is 19.

The square root of 171442 is about 414.0555518285. The cubic root of 171442 is about 55.5527728977.

The spelling of 171442 in words is "one hundred seventy-one thousand, four hundred forty-two", and thus it is an iban number.