1044221543 has 4 divisors (see below), whose sum is σ = 1044712320. Its totient is φ = 1043730768.

The previous prime is 1044221539. The next prime is 1044221569. The reversal of 1044221543 is 3451224401.

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 1044221543 - 2² = 1044221539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1044221573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242183 + ... + 246456.

It is an arithmetic number, because the mean of its divisors is an integer number (261178080).

Almost surely, 2^1044221543 is an apocalyptic number.

1044221543 is a deficient number, since it is larger than the sum of its proper divisors (490777).

1044221543 is an equidigital number, since it uses as much as digits as its factorization.

1044221543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490776.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1044221543 is about 32314.4169528092. The cubic root of 1044221543 is about 1014.5284172313.

Adding to 1044221543 its reverse (3451224401), we get a palindrome (4495445944).

The spelling of 1044221543 in words is "one billion, forty-four million, two hundred twenty-one thousand, five hundred forty-three".