1120440443 has 4 divisors (see below), whose sum is σ = 1121357808. Its totient is φ = 1119523080.

The previous prime is 1120440407. The next prime is 1120440457. The reversal of 1120440443 is 3440440211.

It is a happy number.

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 1120440443 - 2⁸ = 1120440187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1120440493) 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 3 ways as a sum of consecutive naturals, for example, 456848 + ... + 459293.

It is an arithmetic number, because the mean of its divisors is an integer number (280339452).

Almost surely, 2^1120440443 is an apocalyptic number.

1120440443 is a deficient number, since it is larger than the sum of its proper divisors (917365).

1120440443 is an equidigital number, since it uses as much as digits as its factorization.

1120440443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917364.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1120440443 is about 33472.9807904823. The cubic root of 1120440443 is about 1038.6349333438.

Adding to 1120440443 its reverse (3440440211), we get a palindrome (4560880654).

The spelling of 1120440443 in words is "one billion, one hundred twenty million, four hundred forty thousand, four hundred forty-three".