124421443 has 4 divisors (see below), whose sum is σ = 130969960. Its totient is φ = 117872928.

The previous prime is 124421431. The next prime is 124421447. The reversal of 124421443 is 344124421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124421443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124421447) 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, 3274230 + ... + 3274267.

It is an arithmetic number, because the mean of its divisors is an integer number (32742490).

Almost surely, 2^124421443 is an apocalyptic number.

124421443 is a deficient number, since it is larger than the sum of its proper divisors (6548517).

124421443 is an equidigital number, since it uses as much as digits as its factorization.

124421443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6548516.

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

The square root of 124421443 is about 11154.4360233945. The cubic root of 124421443 is about 499.2273974522.

Adding to 124421443 its reverse (344124421), we get a palindrome (468545864).

The spelling of 124421443 in words is "one hundred twenty-four million, four hundred twenty-one thousand, four hundred forty-three".