43220123 has 2 divisors, whose sum is σ = 43220124. Its totient is φ = 43220122.

The previous prime is 43220113. The next prime is 43220129. The reversal of 43220123 is 32102234.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43220123 - 2¹⁸ = 42957979 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (43220129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21610061 + 21610062.

It is an arithmetic number, because the mean of its divisors is an integer number (21610062).

Almost surely, 2^43220123 is an apocalyptic number.

43220123 is a deficient number, since it is larger than the sum of its proper divisors (1).

43220123 is an equidigital number, since it uses as much as digits as its factorization.

43220123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 43220123 is about 6574.2013203126. The cubic root of 43220123 is about 350.9366016182.

Adding to 43220123 its reverse (32102234), we get a palindrome (75322357).

The spelling of 43220123 in words is "forty-three million, two hundred twenty thousand, one hundred twenty-three".