1045543423 has 4 divisors (see below), whose sum is σ = 1051320088. Its totient is φ = 1039766760.

The previous prime is 1045543403. The next prime is 1045543427. The reversal of 1045543423 is 3243455401.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1045543423 is a prime.

It is a super-2 number, since 2×1045543423² = 2186322098757113858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045543427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2888061 + ... + 2888422.

It is an arithmetic number, because the mean of its divisors is an integer number (262830022).

Almost surely, 2^1045543423 is an apocalyptic number.

1045543423 is a deficient number, since it is larger than the sum of its proper divisors (5776665).

1045543423 is an equidigital number, since it uses as much as digits as its factorization.

1045543423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776664.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 1045543423 is about 32334.8638933273. The cubic root of 1045543423 is about 1014.9563338734.

Adding to 1045543423 its reverse (3243455401), we get a palindrome (4288998824).

The spelling of 1045543423 in words is "one billion, forty-five million, five hundred forty-three thousand, four hundred twenty-three".