420043211321 has 4 divisors (see below), whose sum is σ = 420146904144. Its totient is φ = 419939518500.

The previous prime is 420043211261. The next prime is 420043211351. The reversal of 420043211321 is 123112340024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420043211321 - 2²² = 420039017017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420043211351) 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 in 3 ways as a sum of consecutive naturals, for example, 51840335 + ... + 51848436.

It is an arithmetic number, because the mean of its divisors is an integer number (105036726036).

Almost surely, 2^420043211321 is an apocalyptic number.

It is an amenable number.

420043211321 is a deficient number, since it is larger than the sum of its proper divisors (103692823).

420043211321 is a wasteful number, since it uses less digits than its factorization.

420043211321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103692822.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 420043211321 its reverse (123112340024), we get a palindrome (543155551345).

The spelling of 420043211321 in words is "four hundred twenty billion, forty-three million, two hundred eleven thousand, three hundred twenty-one".