142231 has 2 divisors, whose sum is σ = 142232. Its totient is φ = 142230.

The previous prime is 142223. The next prime is 142237. The reversal of 142231 is 132241.

It is a strong prime.

It is an emirp because it is prime and its reverse (132241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142231 - 2³ = 142223 is a prime.

It is a super-2 number, since 2×142231² = 40459314722, which contains 22 as substring.

It is equal to p₁₃₂₀₇ and since 142231 and 13207 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71115 + 71116.

It is an arithmetic number, because the mean of its divisors is an integer number (71116).

2¹⁴²²³¹ is an apocalyptic number.

142231 is a deficient number, since it is larger than the sum of its proper divisors (1).

142231 is an equidigital number, since it uses as much as digits as its factorization.

142231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 13.

The square root of 142231 is about 377.1352542524. The cubic root of 142231 is about 52.1993090634.

Adding to 142231 its reverse (132241), we get a palindrome (274472).

It can be divided in two parts, 142 and 231, that added together give a palindrome (373).

The spelling of 142231 in words is "one hundred forty-two thousand, two hundred thirty-one".