1143404123 has 2 divisors, whose sum is σ = 1143404124. Its totient is φ = 1143404122.

The previous prime is 1143404113. The next prime is 1143404159. The reversal of 1143404123 is 3214043411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143404123 - 2²⁰ = 1142355547 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143404113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571702061 + 571702062.

It is an arithmetic number, because the mean of its divisors is an integer number (571702062).

Almost surely, 2^1143404123 is an apocalyptic number.

1143404123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143404123 is an equidigital number, since it uses as much as digits as its factorization.

1143404123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1143404123 is about 33814.2591668071. The cubic root of 1143404123 is about 1045.6826878430.

Adding to 1143404123 its reverse (3214043411), we get a palindrome (4357447534).

The spelling of 1143404123 in words is "one billion, one hundred forty-three million, four hundred four thousand, one hundred twenty-three".