423213543 has 24 divisors (see below), whose sum is σ = 644542080. Its totient is φ = 266852880.

The previous prime is 423213529. The next prime is 423213563. The reversal of 423213543 is 345312324.

It is not a de Polignac number, because 423213543 - 2¹³ = 423205351 is a prime.

It is a super-2 number, since 2×423213543² = 358219405957225698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423213523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125388 + ... + 128718.

It is an arithmetic number, because the mean of its divisors is an integer number (26855920).

Almost surely, 2^423213543 is an apocalyptic number.

423213543 is a deficient number, since it is larger than the sum of its proper divisors (221328537).

423213543 is a wasteful number, since it uses less digits than its factorization.

423213543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4099 (or 4096 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 423213543 is about 20572.1545541540. The cubic root of 423213543 is about 750.7923732314.

Adding to 423213543 its reverse (345312324), we get a palindrome (768525867).

The spelling of 423213543 in words is "four hundred twenty-three million, two hundred thirteen thousand, five hundred forty-three".