43240423 has 8 divisors (see below), whose sum is σ = 44602560. Its totient is φ = 41896800.

The previous prime is 43240411. The next prime is 43240429. The reversal of 43240423 is 32404234.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43240423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43240394 and 43240403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43240429) 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, 193 + ... + 9301.

It is an arithmetic number, because the mean of its divisors is an integer number (5575320).

Almost surely, 2^43240423 is an apocalyptic number.

43240423 is a deficient number, since it is larger than the sum of its proper divisors (1362137).

43240423 is a wasteful number, since it uses less digits than its factorization.

43240423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9257.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 43240423 is about 6575.7450528438. The cubic root of 43240423 is about 350.9915366612.

Adding to 43240423 its reverse (32404234), we get a palindrome (75644657).

The spelling of 43240423 in words is "forty-three million, two hundred forty thousand, four hundred twenty-three".