43024021 has 4 divisors (see below), whose sum is σ = 43041600. Its totient is φ = 43006444.

The previous prime is 43024019. The next prime is 43024031. The reversal of 43024021 is 12042034.

43024021 is digitally balanced in base 2, 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12042034 = 2 ⋅6021017.

It is a cyclic number.

It is not a de Polignac number, because 43024021 - 2¹ = 43024019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43023986 and 43024004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43024031) 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 3 ways as a sum of consecutive naturals, for example, 4381 + ... + 10258.

It is an arithmetic number, because the mean of its divisors is an integer number (10760400).

Almost surely, 2^43024021 is an apocalyptic number.

It is an amenable number.

43024021 is a deficient number, since it is larger than the sum of its proper divisors (17579).

43024021 is a wasteful number, since it uses less digits than its factorization.

43024021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17578.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 43024021 is about 6559.2698526589. The cubic root of 43024021 is about 350.4050304257.

Adding to 43024021 its reverse (12042034), we get a palindrome (55066055).

The spelling of 43024021 in words is "forty-three million, twenty-four thousand, twenty-one".