1140543 has 12 divisors (see below), whose sum is σ = 1656720. Its totient is φ = 756096.

The previous prime is 1140539. The next prime is 1140563. The reversal of 1140543 is 3450411.

It is a happy number.

It is not a de Polignac number, because 1140543 - 2² = 1140539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2998 + ... + 3356.

It is an arithmetic number, because the mean of its divisors is an integer number (138060).

2^1140543 is an apocalyptic number.

1140543 is a deficient number, since it is larger than the sum of its proper divisors (516177).

1140543 is a wasteful number, since it uses less digits than its factorization.

1140543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 715 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1140543 is about 1067.9620779784. The cubic root of 1140543 is about 104.4809760628.

Adding to 1140543 its reverse (3450411), we get a palindrome (4590954).

The spelling of 1140543 in words is "one million, one hundred forty thousand, five hundred forty-three".