420400004404 has 48 divisors (see below), whose sum is σ = 780458127120. Its totient is φ = 197791784960.

The previous prime is 420400004383. The next prime is 420400004419. The reversal of 420400004404 is 404400004024.

It can be written as a sum of positive squares in 8 ways, for example, as 59501844900 + 360898159504 = 243930^2 + 600748^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4486092 + ... + 4578844.

It is an arithmetic number, because the mean of its divisors is an integer number (16259544315).

Almost surely, 2^420400004404 is an apocalyptic number.

It is an amenable number.

420400004404 is a deficient number, since it is larger than the sum of its proper divisors (360058122716).

420400004404 is a wasteful number, since it uses less digits than its factorization.

420400004404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93780 (or 93778 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 420400004404 its reverse (404400004024), we get a palindrome (824800008428).

The spelling of 420400004404 in words is "four hundred twenty billion, four hundred million, four thousand, four hundred four".