1143497143 has 4 divisors (see below), whose sum is σ = 1146138448. Its totient is φ = 1140855840.

The previous prime is 1143497087. The next prime is 1143497149. The reversal of 1143497143 is 3417943411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1143497143 - 2¹⁷ = 1143366071 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 (1143497149) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1320003 + ... + 1320868.

It is an arithmetic number, because the mean of its divisors is an integer number (286534612).

Almost surely, 2^1143497143 is an apocalyptic number.

1143497143 is a deficient number, since it is larger than the sum of its proper divisors (2641305).

1143497143 is an equidigital number, since it uses as much as digits as its factorization.

1143497143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641304.

The product of its digits is 36288, while the sum is 37.

The square root of 1143497143 is about 33815.6345940750. The cubic root of 1143497143 is about 1045.7110437451.

The spelling of 1143497143 in words is "one billion, one hundred forty-three million, four hundred ninety-seven thousand, one hundred forty-three".