420442644622 has 32 divisors (see below), whose sum is σ = 846765609984. Its totient is φ = 151208143200.

The previous prime is 420442644599. The next prime is 420442644623. The reversal of 420442644622 is 226446244024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420442644623) 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 15 ways as a sum of consecutive naturals, for example, 105003654 + ... + 105007657.

It is an arithmetic number, because the mean of its divisors is an integer number (26461425312).

Almost surely, 2^420442644622 is an apocalyptic number.

420442644622 is an abundant number, since it is smaller than the sum of its proper divisors (426322965362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420442644622 is a wasteful number, since it uses less digits than its factorization.

420442644622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210011344.

The product of its (nonzero) digits is 589824, while the sum is 40.

Adding to 420442644622 its reverse (226446244024), we get a palindrome (646888888646).

The spelling of 420442644622 in words is "four hundred twenty billion, four hundred forty-two million, six hundred forty-four thousand, six hundred twenty-two".