142836 has 12 divisors (see below), whose sum is σ = 333312. Its totient is φ = 47608.

The previous prime is 142811. The next prime is 142837. The reversal of 142836 is 638241.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142836.

It is not an unprimeable number, because it can be changed into a prime (142837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5940 + ... + 5963.

It is an arithmetic number, because the mean of its divisors is an integer number (27776).

2¹⁴²⁸³⁶ is an apocalyptic number.

It is an amenable number.

142836 is an abundant number, since it is smaller than the sum of its proper divisors (190476).

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

142836 is a wasteful number, since it uses less digits than its factorization.

142836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11910 (or 11908 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 142836 is about 377.9365026033. The cubic root of 142836 is about 52.2732167910.

It can be divided in two parts, 14 and 2836, that added together give a triangular number (2850 = T₇₅).

The spelling of 142836 in words is "one hundred forty-two thousand, eight hundred thirty-six".