4123543423 has 8 divisors (see below), whose sum is σ = 4163788800. Its totient is φ = 4083329880.

The previous prime is 4123543421. The next prime is 4123543427. The reversal of 4123543423 is 3243453214.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4123543423 - 2¹ = 4123543421 is a prime.

It is a super-2 number, since 2×4123543423² = 34007220722733113858, 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 (4123543421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315778 + ... + 328576.

It is an arithmetic number, because the mean of its divisors is an integer number (520473600).

Almost surely, 2^4123543423 is an apocalyptic number.

4123543423 is a deficient number, since it is larger than the sum of its proper divisors (40245377).

4123543423 is a wasteful number, since it uses less digits than its factorization.

4123543423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15917.

The product of its digits is 34560, while the sum is 31.

The square root of 4123543423 is about 64214.8224555671. The cubic root of 4123543423 is about 1603.5783742605.

Adding to 4123543423 its reverse (3243453214), we get a palindrome (7366996637).

The spelling of 4123543423 in words is "four billion, one hundred twenty-three million, five hundred forty-three thousand, four hundred twenty-three".