Adding to 4001340 its reverse (431004), we get a palindrome (4432344).
It is a congruent number.
It is an unprimeable number.
Almost surely, 24001340 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 4001340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6521256).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
4001340 is a wasteful number, since it uses less digits than its factorization.
4001340 is an evil number, because the sum of its binary digits is even.
The square root of 4001340 is about 2000.3349719484. The cubic root of 4001340 is about 158.7578291962.
The spelling of 4001340 in words is "four million, one thousand, three hundred forty".