4424424130421 has 4 divisors (see below), whose sum is σ = 4438381304652. Its totient is φ = 4410466956192.

The previous prime is 4424424130411. The next prime is 4424424130601. The reversal of 4424424130421 is 1240314244244.

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 344181688900 + 4080242441521 = 586670^2 + 2019961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4424424130421 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 (4424424130411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6978586640 + ... + 6978587273.

It is an arithmetic number, because the mean of its divisors is an integer number (1109595326163).

Almost surely, 2^{4424424130421} is an apocalyptic number.

It is an amenable number.

4424424130421 is a deficient number, since it is larger than the sum of its proper divisors (13957174231).

4424424130421 is a wasteful number, since it uses less digits than its factorization.

4424424130421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13957174230.

The product of its (nonzero) digits is 98304, while the sum is 35.

Adding to 4424424130421 its reverse (1240314244244), we get a palindrome (5664738374665).

The spelling of 4424424130421 in words is "four trillion, four hundred twenty-four billion, four hundred twenty-four million, one hundred thirty thousand, four hundred twenty-one".