142686 has 12 divisors (see below), whose sum is σ = 309192. Its totient is φ = 47556.

The previous prime is 142673. The next prime is 142697. The reversal of 142686 is 686241.

142686 is nontrivially palindromic in base 12.

142686 is an undulating number in base 12.

It is a congruent number.

It is an unprimeable number.

142686 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3946 + ... + 3981.

It is an arithmetic number, because the mean of its divisors is an integer number (25766).

2¹⁴²⁶⁸⁶ is an apocalyptic number.

142686 is an abundant number, since it is smaller than the sum of its proper divisors (166506).

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

142686 is a wasteful number, since it uses less digits than its factorization.

142686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7935 (or 7932 counting only the distinct ones).

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

The square root of 142686 is about 377.7380044422. The cubic root of 142686 is about 52.2549120478.

It can be divided in two parts, 142 and 686, that added together give a palindrome (828).

The spelling of 142686 in words is "one hundred forty-two thousand, six hundred eighty-six".