12142 has 8 divisors (see below), whose sum is σ = 19656. Its totient is φ = 5592.

The previous prime is 12119. The next prime is 12143. The reversal of 12142 is 24121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143) by changing a digit.

12142 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, 208 + ... + 259.

It is an arithmetic number, because the mean of its divisors is an integer number (2457).

2¹²¹⁴² is an apocalyptic number.

12142 is a deficient number, since it is larger than the sum of its proper divisors (7514).

12142 is a wasteful number, since it uses less digits than its factorization.

12142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482.

The product of its digits is 16, while the sum is 10.

The square root of 12142 is about 110.1907437129. The cubic root of 12142 is about 22.9842362052.

Adding to 12142 its reverse (24121), we get a palindrome (36263).

The spelling of 12142 in words is "twelve thousand, one hundred forty-two", and thus it is an iban number.