420000422004 has 36 divisors (see below), whose sum is σ = 1063388482884. Its totient is φ = 139773228672.

The previous prime is 420000422003. The next prime is 420000422021. The reversal of 420000422004 is 400224000024.

420000422004 is a `hidden beast` number, since 420 + 0 + 0 + 0 + 42 + 200 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 218266496100 + 201733925904 = 467190^2 + 449148^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420000422003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9432147 + ... + 9476570.

It is an arithmetic number, because the mean of its divisors is an integer number (29538568969).

Almost surely, 2^420000422004 is an apocalyptic number.

It is an amenable number.

420000422004 is an abundant number, since it is smaller than the sum of its proper divisors (643388060880).

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

420000422004 is a wasteful number, since it uses less digits than its factorization.

420000422004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18909344 (or 18909339 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 420000422004 its reverse (400224000024), we get a palindrome (820224422028).

The spelling of 420000422004 in words is "four hundred twenty billion, four hundred twenty-two thousand, four".