142442 has 8 divisors (see below), whose sum is σ = 217056. Its totient is φ = 70092.

The previous prime is 142433. The next prime is 142453. The reversal of 142442 is 244241.

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

It is a self number, because there is not a number n which added to its sum of digits gives 142442.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142442.

It is an unprimeable number.

142442 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, 398 + ... + 665.

It is an arithmetic number, because the mean of its divisors is an integer number (27132).

2¹⁴²⁴⁴² is an apocalyptic number.

142442 is a deficient number, since it is larger than the sum of its proper divisors (74614).

142442 is a wasteful number, since it uses less digits than its factorization.

142442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132.

The product of its digits is 256, while the sum is 17.

The square root of 142442 is about 377.4148910682. The cubic root of 142442 is about 52.2251089060.

Adding to 142442 its reverse (244241), we get a palindrome (386683).

The spelling of 142442 in words is "one hundred forty-two thousand, four hundred forty-two", and thus it is an iban number.