1140 is nontrivially palindromic in base 16.
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
1140 is an undulating number in base 16.
It is a plaindrome in base 13.
It is a nialpdrome in base 15.
It is a congruent number.
It is an unprimeable number.
It is the 18-th tetrahedral number.
21140 is an apocalyptic number.
1140 is a gapful number since it is divisible by the number (10) 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 1140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1680).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1140 is a wasteful number, since it uses less digits than its factorization.
1140 is an odious number, because the sum of its binary digits is odd.
The square root of 1140 is about 33.7638860323. The cubic root of 1140 is about 10.4464392682.
Adding to 1140 its reverse (411), we get a palindrome (1551).
Subtracting from 1140 its reverse (411), we obtain a 6-th power (729 = 36).
The spelling of 1140 in words is "one thousand, one hundred forty", and thus it is an iban number.