1143243 has 12 divisors (see below), whose sum is σ = 1680120. Its totient is φ = 748896.

The previous prime is 1143239. The next prime is 1143257. The reversal of 1143243 is 3423411.

It is not a de Polignac number, because 1143243 - 2² = 1143239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143223) 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 11 ways as a sum of consecutive naturals, for example, 546 + ... + 1607.

It is an arithmetic number, because the mean of its divisors is an integer number (140010).

2^1143243 is an apocalyptic number.

1143243 is a deficient number, since it is larger than the sum of its proper divisors (536877).

1143243 is a wasteful number, since it uses less digits than its factorization.

1143243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218 (or 2215 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 1143243 is about 1069.2254205732. The cubic root of 1143243 is about 104.5633568014.

Adding to 1143243 its reverse (3423411), we get a palindrome (4566654).

The spelling of 1143243 in words is "one million, one hundred forty-three thousand, two hundred forty-three".