1143542223 has 24 divisors (see below), whose sum is σ = 1663461696. Its totient is φ = 756993600.

The previous prime is 1143542209. The next prime is 1143542243. The reversal of 1143542223 is 3222453411.

1143542223 is a `hidden beast` number, since 1 + 1 + 435 + 4 + 2 + 223 = 666.

It is not a de Polignac number, because 1143542223 - 2⁴ = 1143542207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143542243) 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 23 ways as a sum of consecutive naturals, for example, 967693 + ... + 968873.

It is an arithmetic number, because the mean of its divisors is an integer number (69310904).

Almost surely, 2^1143542223 is an apocalyptic number.

1143542223 is a deficient number, since it is larger than the sum of its proper divisors (519919473).

1143542223 is a wasteful number, since it uses less digits than its factorization.

1143542223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855 (or 1852 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 1143542223 is about 33816.3011430878. The cubic root of 1143542223 is about 1045.7247852265.

Adding to 1143542223 its reverse (3222453411), we get a palindrome (4365995634).

The spelling of 1143542223 in words is "one billion, one hundred forty-three million, five hundred forty-two thousand, two hundred twenty-three".