142156 has 12 divisors (see below), whose sum is σ = 284368. Its totient is φ = 60912.

The previous prime is 142151. The next prime is 142157. The reversal of 142156 is 651241.

142156 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (142151) by changing a digit.

142156 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 3 ways as a sum of consecutive naturals, for example, 2511 + ... + 2566.

2¹⁴²¹⁵⁶ is an apocalyptic number.

It is an amenable number.

142156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

142156 is a wasteful number, since it uses less digits than its factorization.

142156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088 (or 5086 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 142156 is about 377.0358073181. The cubic root of 142156 is about 52.1901323567.

Adding to 142156 its reverse (651241), we get a palindrome (793397).

The spelling of 142156 in words is "one hundred forty-two thousand, one hundred fifty-six".