43021103 has 2 divisors, whose sum is σ = 43021104. Its totient is φ = 43021102.

The previous prime is 43021091. The next prime is 43021129. The reversal of 43021103 is 30112034.

43021103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43021103 - 2⁸ = 43020847 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43021133) 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 as a sum of consecutive naturals, namely, 21510551 + 21510552.

It is an arithmetic number, because the mean of its divisors is an integer number (21510552).

Almost surely, 2^43021103 is an apocalyptic number.

43021103 is a deficient number, since it is larger than the sum of its proper divisors (1).

43021103 is an equidigital number, since it uses as much as digits as its factorization.

43021103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 43021103 is about 6559.0474155932. The cubic root of 43021103 is about 350.3971084558.

Adding to 43021103 its reverse (30112034), we get a palindrome (73133137).

The spelling of 43021103 in words is "forty-three million, twenty-one thousand, one hundred three".