4320131424421 has 8 divisors (see below), whose sum is σ = 4321387027064. Its totient is φ = 4318876013760.

The previous prime is 4320131424377. The next prime is 4320131424461. The reversal of 4320131424421 is 1244241310234.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1539621864225 + 2780509560196 = 1240815^2 + 1667486^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4320131424421 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 (4320131424461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53175451 + ... + 53256631.

It is an arithmetic number, because the mean of its divisors is an integer number (540173378383).

Almost surely, 2^{4320131424421} is an apocalyptic number.

It is an amenable number.

4320131424421 is a deficient number, since it is larger than the sum of its proper divisors (1255602643).

4320131424421 is an equidigital number, since it uses as much as digits as its factorization.

4320131424421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95991.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 4320131424421 its reverse (1244241310234), we get a palindrome (5564372734655).

The spelling of 4320131424421 in words is "four trillion, three hundred twenty billion, one hundred thirty-one million, four hundred twenty-four thousand, four hundred twenty-one".