142281 has 6 divisors (see below), whose sum is σ = 205530. Its totient is φ = 94848.

The previous prime is 142271. The next prime is 142297. The reversal of 142281 is 182241.

142281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 84681 + 57600 = 291^2 + 240^2 .

It is not a de Polignac number, because 142281 - 2⁶ = 142217 is a prime.

It is a super-2 number, since 2×142281² = 40487765922, which contains 22 as substring.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142281.

It is not an unprimeable number, because it can be changed into a prime (142211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7896 + ... + 7913.

It is an arithmetic number, because the mean of its divisors is an integer number (34255).

2¹⁴²²⁸¹ is an apocalyptic number.

It is an amenable number.

142281 is a deficient number, since it is larger than the sum of its proper divisors (63249).

142281 is a wasteful number, since it uses less digits than its factorization.

142281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15815 (or 15812 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 142281 is about 377.2015376427. The cubic root of 142281 is about 52.2054250758.

The spelling of 142281 in words is "one hundred forty-two thousand, two hundred eighty-one".