1143243441 has 6 divisors (see below), whose sum is σ = 1651351650. Its totient is φ = 762162288.

The previous prime is 1143243403. The next prime is 1143243461. The reversal of 1143243441 is 1443423411.

It can be written as a sum of positive squares in only one way, i.e., 746437041 + 396806400 = 27321^2 + 19920^2 .

It is not a de Polignac number, because 1143243441 - 2¹⁹ = 1142719153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143243401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63513516 + ... + 63513533.

It is an arithmetic number, because the mean of its divisors is an integer number (275225275).

Almost surely, 2^1143243441 is an apocalyptic number.

It is an amenable number.

1143243441 is a deficient number, since it is larger than the sum of its proper divisors (508108209).

1143243441 is a wasteful number, since it uses less digits than its factorization.

1143243441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127027055 (or 127027052 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 1143243441 is about 33811.8831330052. The cubic root of 1143243441 is about 1045.6337024628.

Adding to 1143243441 its reverse (1443423411), we get a palindrome (2586666852).

The spelling of 1143243441 in words is "one billion, one hundred forty-three million, two hundred forty-three thousand, four hundred forty-one".