7543423 has 4 divisors (see below), whose sum is σ = 7594200. Its totient is φ = 7492648.

The previous prime is 7543409. The next prime is 7543429. The reversal of 7543423 is 3243457.

7543423 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7543423 - 2¹⁷ = 7412351 is a prime.

It is an Ulam number.

It is a Duffinian number.

7543423 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7543391 and 7543400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7543429) 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, 25165 + ... + 25462.

It is an arithmetic number, because the mean of its divisors is an integer number (1898550).

Almost surely, 2^7543423 is an apocalyptic number.

7543423 is a deficient number, since it is larger than the sum of its proper divisors (50777).

7543423 is a wasteful number, since it uses less digits than its factorization.

7543423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50776.

The product of its digits is 10080, while the sum is 28.

The square root of 7543423 is about 2746.5292643626. The cubic root of 7543423 is about 196.1204226651.

It can be divided in two parts, 75434 and 23, that added together give a palindrome (75457).

The spelling of 7543423 in words is "seven million, five hundred forty-three thousand, four hundred twenty-three".