Adding to 1140240 its reverse (420411), we get a palindrome (1560651).
It is a tau number, because it is divible by the number of its divisors (40).
It is an unprimeable number.
21140240 is an apocalyptic number.
1140240 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 pseudoperfect number, because it is the sum of a subset of its proper divisors.
1140240 is a wasteful number, since it uses less digits than its factorization.
1140240 is an odious number, because the sum of its binary digits is odd.
The square root of 1140240 is about 1067.8202095859. The cubic root of 1140240 is about 104.4717230024.
The spelling of 1140240 in words is "one million, one hundred forty thousand, two hundred forty".