124424113421 has 4 divisors (see below), whose sum is σ = 125111539644. Its totient is φ = 123736687200.

The previous prime is 124424113417. The next prime is 124424113423. The reversal of 124424113421 is 124311424421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124311424421 = 19841 ⋅6265381.

It can be written as a sum of positive squares in 2 ways, for example, as 713637796 + 123710475625 = 26714^2 + 351725^2 .

It is a cyclic number.

It is not a de Polignac number, because 124424113421 - 2² = 124424113417 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 (124424113423) 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, 343712840 + ... + 343713201.

It is an arithmetic number, because the mean of its divisors is an integer number (31277884911).

Almost surely, 2^124424113421 is an apocalyptic number.

It is an amenable number.

124424113421 is a deficient number, since it is larger than the sum of its proper divisors (687426223).

124424113421 is an equidigital number, since it uses as much as digits as its factorization.

124424113421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687426222.

The product of its digits is 6144, while the sum is 29.

Adding to 124424113421 its reverse (124311424421), we get a palindrome (248735537842).

The spelling of 124424113421 in words is "one hundred twenty-four billion, four hundred twenty-four million, one hundred thirteen thousand, four hundred twenty-one".