1144521243 has 24 divisors (see below), whose sum is σ = 1751972976. Its totient is φ = 717504000.

The previous prime is 1144521233. The next prime is 1144521247. The reversal of 1144521243 is 3421254411.

1144521243 is a `hidden beast` number, since 1 + 1 + 445 + 212 + 4 + 3 = 666.

It is not a de Polignac number, because 1144521243 - 2⁴ = 1144521227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144521247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224068 + ... + 229118.

It is an arithmetic number, because the mean of its divisors is an integer number (72998874).

Almost surely, 2^1144521243 is an apocalyptic number.

1144521243 is a deficient number, since it is larger than the sum of its proper divisors (607451733).

1144521243 is a wasteful number, since it uses less digits than its factorization.

1144521243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555 (or 6552 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1144521243 is about 33830.7736092452. The cubic root of 1144521243 is about 1046.0231253121.

Adding to 1144521243 its reverse (3421254411), we get a palindrome (4565775654).

The spelling of 1144521243 in words is "one billion, one hundred forty-four million, five hundred twenty-one thousand, two hundred forty-three".