1143267 has 16 divisors (see below), whose sum is σ = 1671840. Its totient is φ = 691712.

The previous prime is 1143257. The next prime is 1143269. The reversal of 1143267 is 7623411.

It is a cyclic number.

It is not a de Polignac number, because 1143267 - 2¹⁰ = 1142243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1093 + ... + 1865.

It is an arithmetic number, because the mean of its divisors is an integer number (104490).

2^1143267 is an apocalyptic number.

1143267 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1143267 is a deficient number, since it is larger than the sum of its proper divisors (528573).

1143267 is a wasteful number, since it uses less digits than its factorization.

1143267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822.

The product of its digits is 1008, while the sum is 24.

The square root of 1143267 is about 1069.2366435921. The cubic root of 1143267 is about 104.5640884927.

Adding to 1143267 its reverse (7623411), we get a palindrome (8766678).

The spelling of 1143267 in words is "one million, one hundred forty-three thousand, two hundred sixty-seven".