43242423 has 16 divisors (see below), whose sum is σ = 69361920. Its totient is φ = 23409216.

The previous prime is 43242383. The next prime is 43242439. The reversal of 43242423 is 32424234.

It is not a de Polignac number, because 43242423 - 2¹⁰ = 43241399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43242393 and 43242402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43242523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53790 + ... + 54587.

It is an arithmetic number, because the mean of its divisors is an integer number (4335120).

Almost surely, 2^43242423 is an apocalyptic number.

43242423 is a deficient number, since it is larger than the sum of its proper divisors (26119497).

43242423 is a wasteful number, since it uses less digits than its factorization.

43242423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108406.

The product of its digits is 4608, while the sum is 24.

The square root of 43242423 is about 6575.8971251077. The cubic root of 43242423 is about 350.9969480502.

Adding to 43242423 its reverse (32424234), we get a palindrome (75666657).

The spelling of 43242423 in words is "forty-three million, two hundred forty-two thousand, four hundred twenty-three".