1143236045 has 16 divisors (see below), whose sum is σ = 1636035840. Its totient is φ = 749848704.

The previous prime is 1143236033. The next prime is 1143236047. The reversal of 1143236045 is 5406323411.

It is a cyclic number.

It is not a de Polignac number, because 1143236045 - 2¹⁴ = 1143219661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1143235999 and 1143236017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143236047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 709280 + ... + 710889.

It is an arithmetic number, because the mean of its divisors is an integer number (102252240).

Almost surely, 2^1143236045 is an apocalyptic number.

It is an amenable number.

1143236045 is a deficient number, since it is larger than the sum of its proper divisors (492799795).

1143236045 is a wasteful number, since it uses less digits than its factorization.

1143236045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420204.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1143236045 is about 33811.7737629956. The cubic root of 1143236045 is about 1045.6314476140.

Adding to 1143236045 its reverse (5406323411), we get a palindrome (6549559456).

The spelling of 1143236045 in words is "one billion, one hundred forty-three million, two hundred thirty-six thousand, forty-five".