142286 has 4 divisors (see below), whose sum is σ = 213432. Its totient is φ = 71142.

The previous prime is 142271. The next prime is 142297. The reversal of 142286 is 682241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 682241 = 7 ⋅97463.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35570 + ... + 35573.

It is an arithmetic number, because the mean of its divisors is an integer number (53358).

2¹⁴²²⁸⁶ is an apocalyptic number.

142286 is a deficient number, since it is larger than the sum of its proper divisors (71146).

142286 is an equidigital number, since it uses as much as digits as its factorization.

142286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71145.

The product of its digits is 768, while the sum is 23.

The square root of 142286 is about 377.2081653411. The cubic root of 142286 is about 52.2060365983.

The spelling of 142286 in words is "one hundred forty-two thousand, two hundred eighty-six".