1143275047 has 8 divisors (see below), whose sum is σ = 1169009856. Its totient is φ = 1117599072.

The previous prime is 1143275039. The next prime is 1143275051. The reversal of 1143275047 is 7405723411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143275047 - 2³ = 1143275039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143275057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25833 + ... + 54349.

It is an arithmetic number, because the mean of its divisors is an integer number (146126232).

Almost surely, 2^1143275047 is an apocalyptic number.

1143275047 is a deficient number, since it is larger than the sum of its proper divisors (25734809).

1143275047 is an equidigital number, since it uses as much as digits as its factorization.

1143275047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29417.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 1143275047 is about 33812.3505098359. The cubic root of 1143275047 is about 1045.6433382042.

Adding to 1143275047 its reverse (7405723411), we get a palindrome (8548998458).

The spelling of 1143275047 in words is "one billion, one hundred forty-three million, two hundred seventy-five thousand, forty-seven".