421304032400443 has 2 divisors, whose sum is σ = 421304032400444. Its totient is φ = 421304032400442.

The previous prime is 421304032400441. The next prime is 421304032400491. The reversal of 421304032400443 is 344004230403124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421304032400443 - 2¹ = 421304032400441 is a prime.

Together with 421304032400441, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 421304032400399 and 421304032400408.

It is not a weakly prime, because it can be changed into another prime (421304032400441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210652016200221 + 210652016200222.

It is an arithmetic number, because the mean of its divisors is an integer number (210652016200222).

Almost surely, 2^{421304032400443} is an apocalyptic number.

421304032400443 is a deficient number, since it is larger than the sum of its proper divisors (1).

421304032400443 is an equidigital number, since it uses as much as digits as its factorization.

421304032400443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 421304032400443 its reverse (344004230403124), we get a palindrome (765308262803567).

The spelling of 421304032400443 in words is "four hundred twenty-one trillion, three hundred four billion, thirty-two million, four hundred thousand, four hundred forty-three".