1140443 has 4 divisors (see below), whose sum is σ = 1147440. Its totient is φ = 1133448.

The previous prime is 1140439. The next prime is 1140449. The reversal of 1140443 is 3440411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1140443 - 2² = 1140439 is a prime.

It is a super-2 number, since 2×1140443² = 2601220472498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3248 + ... + 3581.

It is an arithmetic number, because the mean of its divisors is an integer number (286860).

2^1140443 is an apocalyptic number.

1140443 is a deficient number, since it is larger than the sum of its proper divisors (6997).

1140443 is an equidigital number, since it uses as much as digits as its factorization.

1140443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6996.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1140443 is about 1067.9152588104. The cubic root of 1140443 is about 104.4779224287.

Adding to 1140443 its reverse (3440411), we get a palindrome (4580854).

Subtracting 1140443 from its reverse (3440411), we obtain a cube (2299968 = 132³).

The spelling of 1140443 in words is "one million, one hundred forty thousand, four hundred forty-three".