1143023045 has 4 divisors (see below), whose sum is σ = 1371627660. Its totient is φ = 914418432.

The previous prime is 1143023029. The next prime is 1143023047. The reversal of 1143023045 is 5403203411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5403203411 = 29 ⋅186317359.

It can be written as a sum of positive squares in 2 ways, for example, as 196476289 + 946546756 = 14017^2 + 30766^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143023045 - 2⁴ = 1143023029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1143023045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143023047) 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, 114302300 + ... + 114302309.

It is an arithmetic number, because the mean of its divisors is an integer number (342906915).

Almost surely, 2^1143023045 is an apocalyptic number.

It is an amenable number.

1143023045 is a deficient number, since it is larger than the sum of its proper divisors (228604615).

1143023045 is an equidigital number, since it uses as much as digits as its factorization.

1143023045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228604614.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1143023045 is about 33808.6238258821. The cubic root of 1143023045 is about 1045.5665052565.

Adding to 1143023045 its reverse (5403203411), we get a palindrome (6546226456).

The spelling of 1143023045 in words is "one billion, one hundred forty-three million, twenty-three thousand, forty-five".