4021434340423 has 2 divisors, whose sum is σ = 4021434340424. Its totient is φ = 4021434340422.

The previous prime is 4021434340409. The next prime is 4021434340433. The reversal of 4021434340423 is 3240434341204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4021434340423 - 2⁹ = 4021434339911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021434340433) 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 as a sum of consecutive naturals, namely, 2010717170211 + 2010717170212.

It is an arithmetic number, because the mean of its divisors is an integer number (2010717170212).

Almost surely, 2^{4021434340423} is an apocalyptic number.

4021434340423 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021434340423 is an equidigital number, since it uses as much as digits as its factorization.

4021434340423 is an odious number, because the sum of its binary digits is odd.

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

Adding to 4021434340423 its reverse (3240434341204), we get a palindrome (7261868681627).

The spelling of 4021434340423 in words is "four trillion, twenty-one billion, four hundred thirty-four million, three hundred forty thousand, four hundred twenty-three".