42271 has 4 divisors (see below), whose sum is σ = 43344. Its totient is φ = 41200.

The previous prime is 42257. The next prime is 42281. The reversal of 42271 is 17224.

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 42271 - 2⁵ = 42239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42221) 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, 475 + ... + 556.

It is an arithmetic number, because the mean of its divisors is an integer number (10836).

2⁴²²⁷¹ is an apocalyptic number.

42271 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

42271 is a deficient number, since it is larger than the sum of its proper divisors (1073).

42271 is a wasteful number, since it uses less digits than its factorization.

42271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072.

The product of its digits is 112, while the sum is 16.

The square root of 42271 is about 205.5991245118. The cubic root of 42271 is about 34.8348683852.

Adding to 42271 its reverse (17224), we get a palindrome (59495).

It can be divided in two parts, 42 and 271, that added together give a palindrome (313).

The spelling of 42271 in words is "forty-two thousand, two hundred seventy-one", and thus it is an iban number.