1144220143 has 8 divisors (see below), whose sum is σ = 1291283280. Its totient is φ = 1004330880.

The previous prime is 1144220111. The next prime is 1144220179. The reversal of 1144220143 is 3410224411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1144220143 - 2⁵ = 1144220111 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 (1144220183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1793130 + ... + 1793767.

It is an arithmetic number, because the mean of its divisors is an integer number (161410410).

Almost surely, 2^1144220143 is an apocalyptic number.

1144220143 is a deficient number, since it is larger than the sum of its proper divisors (147063137).

1144220143 is a wasteful number, since it uses less digits than its factorization.

1144220143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586937.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1144220143 is about 33826.3232261504. The cubic root of 1144220143 is about 1045.9313882099.

Adding to 1144220143 its reverse (3410224411), we get a palindrome (4554444554).

The spelling of 1144220143 in words is "one billion, one hundred forty-four million, two hundred twenty thousand, one hundred forty-three".