142866 has 12 divisors (see below), whose sum is σ = 309582. Its totient is φ = 47616.

The previous prime is 142841. The next prime is 142867. The reversal of 142866 is 668241.

It can be written as a sum of positive squares in only one way, i.e., 77841 + 65025 = 279^2 + 255^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142866.

It is not an unprimeable number, because it can be changed into a prime (142867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3951 + ... + 3986.

2¹⁴²⁸⁶⁶ is an apocalyptic number.

142866 is an abundant number, since it is smaller than the sum of its proper divisors (166716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142866 is a wasteful number, since it uses less digits than its factorization.

142866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7945 (or 7942 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 142866 is about 377.9761897263. The cubic root of 142866 is about 52.2768762016.

The spelling of 142866 in words is "one hundred forty-two thousand, eight hundred sixty-six".