420333423401321 has 4 divisors (see below), whose sum is σ = 420333984103044. Its totient is φ = 420332862699600.

The previous prime is 420333423401303. The next prime is 420333423401329. The reversal of 420333423401321 is 123104324333024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 290595947265625 + 129737476135696 = 17046875^2 + 11390236^2 .

It is a cyclic number.

It is not a de Polignac number, because 420333423401321 - 2²⁶ = 420333356292457 is a prime.

It is a super-3 number, since 3×420333423401321³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420333423401329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279224870 + ... + 280726191.

It is an arithmetic number, because the mean of its divisors is an integer number (105083496025761).

Almost surely, 2^{420333423401321} is an apocalyptic number.

It is an amenable number.

420333423401321 is a deficient number, since it is larger than the sum of its proper divisors (560701723).

420333423401321 is an equidigital number, since it uses as much as digits as its factorization.

420333423401321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560701722.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 420333423401321 its reverse (123104324333024), we get a palindrome (543437747734345).

The spelling of 420333423401321 in words is "four hundred twenty trillion, three hundred thirty-three billion, four hundred twenty-three million, four hundred one thousand, three hundred twenty-one".