It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1413411 = 3 ⋅471137.
It is a cyclic number.
It is a D-number.
It is a self number, because there is not a number n which added to its sum of digits gives 1143141.
It is a congruent number.
21143141 is an apocalyptic number.
It is an amenable number.
1143141 is an equidigital number, since it uses as much as digits as its factorization.
1143141 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 381050.
The square root of 1143141 is about 1069.1777214289. The cubic root of 1143141 is about 104.5602469989.
Adding to 1143141 its reverse (1413411), we get a palindrome (2556552).
The spelling of 1143141 in words is "one million, one hundred forty-three thousand, one hundred forty-one".