Adding to 142242 its reverse (242241), we get a palindrome (384483).
Subtracting 142242 from its reverse (242241), we obtain a palindrome (99999).
142242 is nontrivially palindromic in base 4.
It is an unprimeable number.
142242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2142242 is an apocalyptic number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
142242 is a wasteful number, since it uses less digits than its factorization.
142242 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 313.
The square root of 142242 is about 377.1498375977. The cubic root of 142242 is about 52.2006547091.
The spelling of 142242 in words is "one hundred forty-two thousand, two hundred forty-two", and thus it is an iban number.