423044543 has 4 divisors (see below), whose sum is σ = 441437808. Its totient is φ = 404651280.

The previous prime is 423044539. The next prime is 423044591. The reversal of 423044543 is 345440324.

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 423044543 - 2² = 423044539 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 (423044513) 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, 9196598 + ... + 9196643.

It is an arithmetic number, because the mean of its divisors is an integer number (110359452).

Almost surely, 2^423044543 is an apocalyptic number.

423044543 is a deficient number, since it is larger than the sum of its proper divisors (18393265).

423044543 is a wasteful number, since it uses less digits than its factorization.

423044543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18393264.

The product of its (nonzero) digits is 23040, while the sum is 29.

The square root of 423044543 is about 20568.0466500832. The cubic root of 423044543 is about 750.6924230555.

Adding to 423044543 its reverse (345440324), we get a palindrome (768484867).

The spelling of 423044543 in words is "four hundred twenty-three million, forty-four thousand, five hundred forty-three".