1143427671 has 40 divisors (see below), whose sum is σ = 1761827760. Its totient is φ = 738661248.

The previous prime is 1143427661. The next prime is 1143427679. The reversal of 1143427671 is 1767243411.

It is not a de Polignac number, because 1143427671 - 2¹⁹ = 1142903383 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143427679) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 354715 + ... + 357923.

It is an arithmetic number, because the mean of its divisors is an integer number (44045694).

Almost surely, 2^1143427671 is an apocalyptic number.

1143427671 is a deficient number, since it is larger than the sum of its proper divisors (618400089).

1143427671 is an equidigital number, since it uses as much as digits as its factorization.

1143427671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357 (or 3348 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 1143427671 is about 33814.6073613165. The cubic root of 1143427671 is about 1045.6898662810.

The spelling of 1143427671 in words is "one billion, one hundred forty-three million, four hundred twenty-seven thousand, six hundred seventy-one".