Adding to 42042213525271 its reverse (17252531224024), we get a palindrome (59294744749295).
It is a weak prime.
It is a cyclic number.
It is a congruent number.
Almost surely, 242042213525271 is an apocalyptic number.
42042213525271 is an equidigital number, since it uses as much as digits as its factorization.
42042213525271 is an odious number, because the sum of its binary digits is odd.
The spelling of 42042213525271 in words is "forty-two trillion, forty-two billion, two hundred thirteen million, five hundred twenty-five thousand, two hundred seventy-one".