43021423 has 8 divisors (see below), whose sum is σ = 44288496. Its totient is φ = 41764800.

The previous prime is 43021421. The next prime is 43021463. The reversal of 43021423 is 32412034.

43021423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 43021423 - 2¹ = 43021421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43021423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43021421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6165 + ... + 11137.

It is an arithmetic number, because the mean of its divisors is an integer number (5536062).

Almost surely, 2^43021423 is an apocalyptic number.

43021423 is a deficient number, since it is larger than the sum of its proper divisors (1267073).

43021423 is a wasteful number, since it uses less digits than its factorization.

43021423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5225.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 43021423 is about 6559.0718093340. The cubic root of 43021423 is about 350.3979772294.

Adding to 43021423 its reverse (32412034), we get a palindrome (75433457).

The spelling of 43021423 in words is "forty-three million, twenty-one thousand, four hundred twenty-three".