It is an Ulam number.
It is a self number, because there is not a number n which added to its sum of digits gives 140304.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 140304.
It is an unprimeable number.
2140304 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 140304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188480).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
140304 is a wasteful number, since it uses less digits than its factorization.
140304 is an evil number, because the sum of its binary digits is even.
The square root of 140304 is about 374.5717554755. The cubic root of 140304 is about 51.9624976146.
Adding to 140304 its reverse (403041), we get a palindrome (543345).
The spelling of 140304 in words is "one hundred forty thousand, three hundred four", and thus it is an iban number.