1143220044 has 24 divisors (see below), whose sum is σ = 2807909440. Its totient is φ = 361016784.

The previous prime is 1143220021. The next prime is 1143220087. The reversal of 1143220044 is 4400223411.

It is a self number, because there is not a number n which added to its sum of digits gives 1143220044.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2506834 + ... + 2507289.

Almost surely, 2^1143220044 is an apocalyptic number.

It is an amenable number.

1143220044 is an abundant number, since it is smaller than the sum of its proper divisors (1664689396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143220044 is a wasteful number, since it uses less digits than its factorization.

1143220044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5014149 (or 5014147 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1143220044 is about 33811.5371434071. The cubic root of 1143220044 is about 1045.6265692902.

Adding to 1143220044 its reverse (4400223411), we get a palindrome (5543443455).

The spelling of 1143220044 in words is "one billion, one hundred forty-three million, two hundred twenty thousand, forty-four".