1143042123 has 4 divisors (see below), whose sum is σ = 1524056168. Its totient is φ = 762028080.

The previous prime is 1143042119. The next prime is 1143042139. The reversal of 1143042123 is 3212403411.

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

It is not a de Polignac number, because 1143042123 - 2² = 1143042119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143042123.

It is not an unprimeable number, because it can be changed into a prime (1143042113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190507018 + ... + 190507023.

It is an arithmetic number, because the mean of its divisors is an integer number (381014042).

Almost surely, 2^1143042123 is an apocalyptic number.

1143042123 is a deficient number, since it is larger than the sum of its proper divisors (381014045).

1143042123 is an equidigital number, since it uses as much as digits as its factorization.

1143042123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381014044.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1143042123 is about 33808.9059716519. The cubic root of 1143042123 is about 1045.5723223474.

Adding to 1143042123 its reverse (3212403411), we get a palindrome (4355445534).

The spelling of 1143042123 in words is "one billion, one hundred forty-three million, forty-two thousand, one hundred twenty-three".