1143220243 has 8 divisors (see below), whose sum is σ = 1247616000. Its totient is φ = 1038902280.

The previous prime is 1143220237. The next prime is 1143220249. The reversal of 1143220243 is 3420223411.

It is an interprime number because it is at equal distance from previous prime (1143220237) and next prime (1143220249).

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 1143220243 - 2²⁵ = 1109665811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143220249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13758 + ... + 49756.

It is an arithmetic number, because the mean of its divisors is an integer number (155952000).

Almost surely, 2^1143220243 is an apocalyptic number.

1143220243 is a deficient number, since it is larger than the sum of its proper divisors (104395757).

1143220243 is a wasteful number, since it uses less digits than its factorization.

1143220243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38897.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1143220243 is about 33811.5400861895. The cubic root of 1143220243 is about 1045.6266299608.

Adding to 1143220243 its reverse (3420223411), we get a palindrome (4563443654).

The spelling of 1143220243 in words is "one billion, one hundred forty-three million, two hundred twenty thousand, two hundred forty-three".