142422 has 16 divisors (see below), whose sum is σ = 325632. Its totient is φ = 40680.

The previous prime is 142421. The next prime is 142427. The reversal of 142422 is 224241.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142422.

It is not an unprimeable number, because it can be changed into a prime (142421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1654 + ... + 1737.

It is an arithmetic number, because the mean of its divisors is an integer number (20352).

2¹⁴²⁴²² is an apocalyptic number.

142422 is an abundant number, since it is smaller than the sum of its proper divisors (183210).

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

142422 is a wasteful number, since it uses less digits than its factorization.

142422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403.

The product of its digits is 128, while the sum is 15.

The square root of 142422 is about 377.3883940982. The cubic root of 142422 is about 52.2226645168. Note that the first 3 decimals are identical.

Adding to 142422 its reverse (224241), we get a palindrome (366663).

The spelling of 142422 in words is "one hundred forty-two thousand, four hundred twenty-two", and thus it is an iban number.