420242222401 has 4 divisors (see below), whose sum is σ = 420320325204. Its totient is φ = 420164119600.

The previous prime is 420242222381. The next prime is 420242222441. The reversal of 420242222401 is 104222242024.

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 106014708801 + 314227513600 = 325599^2 + 560560^2 .

It is a cyclic number.

It is not a de Polignac number, because 420242222401 - 2²⁵ = 420208667969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420242222441) 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, 39043330 + ... + 39054091.

It is an arithmetic number, because the mean of its divisors is an integer number (105080081301).

Almost surely, 2^420242222401 is an apocalyptic number.

It is an amenable number.

420242222401 is a deficient number, since it is larger than the sum of its proper divisors (78102803).

420242222401 is an equidigital number, since it uses as much as digits as its factorization.

420242222401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78102802.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 420242222401 its reverse (104222242024), we get a palindrome (524464464425).

The spelling of 420242222401 in words is "four hundred twenty billion, two hundred forty-two million, two hundred twenty-two thousand, four hundred one".