42231 has 8 divisors (see below), whose sum is σ = 64384. Its totient is φ = 24120.

The previous prime is 42227. The next prime is 42239. The reversal of 42231 is 13224.

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

It is not a de Polignac number, because 42231 - 2² = 42227 is a prime.

It is a super-2 number, since 2×42231² = 3566914722, which contains 22 as substring.

It is an Ulam number.

It is the 206-th Hogben number.

It is a Duffinian number.

42231 is a lucky number.

It is a plaindrome in base 8 and base 14.

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 42231.

It is not an unprimeable number, because it can be changed into a prime (42239) by changing a digit.

It is a nontrivial repunit in base 205.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 985 + ... + 1026.

It is an arithmetic number, because the mean of its divisors is an integer number (8048).

2⁴²²³¹ is an apocalyptic number.

42231 is a deficient number, since it is larger than the sum of its proper divisors (22153).

42231 is a wasteful number, since it uses less digits than its factorization.

42231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021.

The product of its digits is 48, while the sum is 12.

The square root of 42231 is about 205.5018248094. The cubic root of 42231 is about 34.8238771266.

Adding to 42231 its reverse (13224), we get a palindrome (55455).

It can be divided in two parts, 4223 and 1, that added together give a palindrome (4224).

The spelling of 42231 in words is "forty-two thousand, two hundred thirty-one".