It is a happy number.
It is a congruent number.
It is an unprimeable number.
Almost surely, 21434401321142 is an apocalyptic number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1434401321142 is a wasteful number, since it uses less digits than its factorization.
1434401321142 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1086672.
Adding to 1434401321142 its reverse (2411231044341), we get a palindrome (3845632365483).
The spelling of 1434401321142 in words is "one trillion, four hundred thirty-four billion, four hundred one million, three hundred twenty-one thousand, one hundred forty-two".