142786 has 24 divisors (see below), whose sum is σ = 262656. Its totient is φ = 57960.

The previous prime is 142771. The next prime is 142787. The reversal of 142786 is 687241.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 4⁵ + 7⁴ + 2¹⁷ + 8³ + 6⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142787) by changing a digit.

142786 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 11 ways as a sum of consecutive naturals, for example, 3015 + ... + 3061.

It is an arithmetic number, because the mean of its divisors is an integer number (10944).

2¹⁴²⁷⁸⁶ is an apocalyptic number.

142786 is a deficient number, since it is larger than the sum of its proper divisors (119870).

142786 is a wasteful number, since it uses less digits than its factorization.

142786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 87 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 142786 is about 377.8703481354. The cubic root of 142786 is about 52.2671166344.

The spelling of 142786 in words is "one hundred forty-two thousand, seven hundred eighty-six".