420343130242221 has 8 divisors (see below), whose sum is σ = 560457609656064. Its totient is φ = 280228702161600.

The previous prime is 420343130242181. The next prime is 420343130242247. The reversal of 420343130242221 is 122242031343024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420343130242221 - 2¹⁸ = 420343129980077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420343130242291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14731125 + ... + 32522181.

It is an arithmetic number, because the mean of its divisors is an integer number (70057201207008).

Almost surely, 2^{420343130242221} is an apocalyptic number.

It is an amenable number.

420343130242221 is a deficient number, since it is larger than the sum of its proper divisors (140114479413843).

420343130242221 is a wasteful number, since it uses less digits than its factorization.

420343130242221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25666611.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 420343130242221 its reverse (122242031343024), we get a palindrome (542585161585245).

The spelling of 420343130242221 in words is "four hundred twenty trillion, three hundred forty-three billion, one hundred thirty million, two hundred forty-two thousand, two hundred twenty-one".