124040443 has 4 divisors (see below), whose sum is σ = 124320888. Its totient is φ = 123760000.

The previous prime is 124040437. The next prime is 124040447. The reversal of 124040443 is 344040421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 124040443 - 2¹⁷ = 123909371 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124040447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139558 + ... + 140443.

It is an arithmetic number, because the mean of its divisors is an integer number (31080222).

Almost surely, 2^124040443 is an apocalyptic number.

124040443 is a deficient number, since it is larger than the sum of its proper divisors (280445).

124040443 is an equidigital number, since it uses as much as digits as its factorization.

124040443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280444.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 124040443 is about 11137.3445219226. The cubic root of 124040443 is about 498.7173028567.

Subtracting from 124040443 its sum of digits (22), we obtain a palindrome (124040421).

Adding to 124040443 its reverse (344040421), we get a palindrome (468080864).

The spelling of 124040443 in words is "one hundred twenty-four million, forty thousand, four hundred forty-three".