1143305456 has 40 divisors (see below), whose sum is σ = 2284835904. Its totient is φ = 553913600.

The previous prime is 1143305431. The next prime is 1143305473. The reversal of 1143305456 is 6545033411.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 68426 + ... + 83478.

Almost surely, 2^1143305456 is an apocalyptic number.

1143305456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1143305456 is a deficient number, since it is larger than the sum of its proper divisors (1141530448).

1143305456 is a wasteful number, since it uses less digits than its factorization.

1143305456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15209 (or 15203 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1143305456 is about 33812.8001798136. The cubic root of 1143305456 is about 1045.6526088477.

Adding to 1143305456 its reverse (6545033411), we get a palindrome (7688338867).

The spelling of 1143305456 in words is "one billion, one hundred forty-three million, three hundred five thousand, four hundred fifty-six".