142188 has 36 divisors (see below), whose sum is σ = 361032. Its totient is φ = 43520.

The previous prime is 142183. The next prime is 142189. The reversal of 142188 is 881241.

142188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (142183) by changing a digit.

142188 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, 3448 + ... + 3488.

2¹⁴²¹⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180516).

142188 is an abundant number, since it is smaller than the sum of its proper divisors (218844).

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

142188 is a wasteful number, since it uses less digits than its factorization.

142188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 63 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The square root of 142188 is about 377.0782412179. The cubic root of 142188 is about 52.1940481463.

The spelling of 142188 in words is "one hundred forty-two thousand, one hundred eighty-eight".