124443421 has 4 divisors (see below), whose sum is σ = 124571772. Its totient is φ = 124315072.

The previous prime is 124443377. The next prime is 124443427. The reversal of 124443421 is 124344421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 77246521 + 47196900 = 8789^2 + 6870^2 .

It is a cyclic number.

It is not a de Polignac number, because 124443421 - 2⁹ = 124442909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124443427) 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, 62710 + ... + 64663.

It is an arithmetic number, because the mean of its divisors is an integer number (31142943).

Almost surely, 2^124443421 is an apocalyptic number.

It is an amenable number.

124443421 is a deficient number, since it is larger than the sum of its proper divisors (128351).

124443421 is an equidigital number, since it uses as much as digits as its factorization.

124443421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128350.

The product of its digits is 3072, while the sum is 25.

The square root of 124443421 is about 11155.4211484820. The cubic root of 124443421 is about 499.2567904933.

Adding to 124443421 its reverse (124344421), we get a palindrome (248787842).

The spelling of 124443421 in words is "one hundred twenty-four million, four hundred forty-three thousand, four hundred twenty-one".