1143220043 has 16 divisors (see below), whose sum is σ = 1349935104. Its totient is φ = 947674080.

The previous prime is 1143220021. The next prime is 1143220087. The reversal of 1143220043 is 3400223411.

It is a cyclic number.

It is not a de Polignac number, because 1143220043 - 2²⁴ = 1126442827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1143219997 and 1143220024.

It is not an unprimeable number, because it can be changed into a prime (1143220843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30038 + ... + 56468.

It is an arithmetic number, because the mean of its divisors is an integer number (84370944).

Almost surely, 2^1143220043 is an apocalyptic number.

1143220043 is a deficient number, since it is larger than the sum of its proper divisors (206715061).

1143220043 is a wasteful number, since it uses less digits than its factorization.

1143220043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26642.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1143220043 is about 33811.5371286193. The cubic root of 1143220043 is about 1045.6265689853.

Adding to 1143220043 its reverse (3400223411), we get a palindrome (4543443454).

The spelling of 1143220043 in words is "one billion, one hundred forty-three million, two hundred twenty thousand, forty-three".