142056 has 24 divisors (see below), whose sum is σ = 384930. Its totient is φ = 47328.

The previous prime is 142049. The next prime is 142057. The reversal of 142056 is 650241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 133956 + 8100 = 366^2 + 90^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (142057) by changing a digit.

142056 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, 915 + ... + 1058.

2¹⁴²⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

142056 is an abundant number, since it is smaller than the sum of its proper divisors (242874).

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

142056 is a wasteful number, since it uses less digits than its factorization.

142056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985 (or 1978 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 142056 is about 376.9031705889. The cubic root of 142056 is about 52.1778917256.

Adding to 142056 its reverse (650241), we get a palindrome (792297).

The spelling of 142056 in words is "one hundred forty-two thousand, fifty-six".