1121040443 has 4 divisors (see below), whose sum is σ = 1159697040. Its totient is φ = 1082383848.

The previous prime is 1121040407. The next prime is 1121040457. The reversal of 1121040443 is 3440401211.

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 1121040443 - 2⁶ = 1121040379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121040463) 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, 19328255 + ... + 19328312.

It is an arithmetic number, because the mean of its divisors is an integer number (289924260).

Almost surely, 2^1121040443 is an apocalyptic number.

1121040443 is a deficient number, since it is larger than the sum of its proper divisors (38656597).

1121040443 is an equidigital number, since it uses as much as digits as its factorization.

1121040443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38656596.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1121040443 is about 33481.9420434359. The cubic root of 1121040443 is about 1038.8202978756.

Adding to 1121040443 its reverse (3440401211), we get a palindrome (4561441654).

The spelling of 1121040443 in words is "one billion, one hundred twenty-one million, forty thousand, four hundred forty-three".