7140 divided by its sum of digits (12) gives a palindrome (595).
Adding to 7140 its reverse (417), we get a palindrome (7557).
7140 is nontrivially palindromic in base 13.
7140 is a nontrivial repdigit in base 13.
It is a plaindrome in base 13.
It is a nialpdrome in base 13.
It is a zygodrome in base 13.
It is a congruent number.
It is an unprimeable number.
7140 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is the 34-th tetrahedral number.
27140 is an apocalyptic number.
7140 is a gapful number since it is divisible by the number (70) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 7140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12096).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
7140 is a wasteful number, since it uses less digits than its factorization.
7140 is an evil number, because the sum of its binary digits is even.
The square root of 7140 is about 84.4985206971. The cubic root of 7140 is about 19.2559997040.
The spelling of 7140 in words is "seven thousand, one hundred forty", and thus it is an iban number.