Adding to 4140 its reverse (414), we get a palindrome (4554).
It is a tau number, because it is divible by the number of its divisors (36).
It is the 8-th Bell number.
It is a nialpdrome in base 6.
It is an unprimeable number.
24140 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 4140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6552).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
4140 is a wasteful number, since it uses less digits than its factorization.
4140 is an evil number, because the sum of its binary digits is even.
The square root of 4140 is about 64.3428317686. The cubic root of 4140 is about 16.0570877363.
The spelling of 4140 in words is "four thousand, one hundred forty", and thus it is an iban number.