420340334443 has 4 divisors (see below), whose sum is σ = 442463509960. Its totient is φ = 398217158928.

The previous prime is 420340334377. The next prime is 420340334461. The reversal of 420340334443 is 344433043024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420340334443 - 2²⁹ = 419803463531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420340334399 and 420340334408.

It is not an unprimeable number, because it can be changed into a prime (420340334143) 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, 11061587730 + ... + 11061587767.

It is an arithmetic number, because the mean of its divisors is an integer number (110615877490).

Almost surely, 2^420340334443 is an apocalyptic number.

420340334443 is a deficient number, since it is larger than the sum of its proper divisors (22123175517).

420340334443 is a wasteful number, since it uses less digits than its factorization.

420340334443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22123175516.

The product of its (nonzero) digits is 165888, while the sum is 34.

Adding to 420340334443 its reverse (344433043024), we get a palindrome (764773377467).

The spelling of 420340334443 in words is "four hundred twenty billion, three hundred forty million, three hundred thirty-four thousand, four hundred forty-three".