421204344004400 has 90 divisors (see below), whose sum is σ = 1112301463355796. Its totient is φ = 153165215984000.

The previous prime is 421204344004397. The next prime is 421204344004429. The reversal of 421204344004400 is 4400443402124.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4351236146 + ... + 4351332945.

Almost surely, 2^{421204344004400} is an apocalyptic number.

421204344004400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421204344004400 is an abundant number, since it is smaller than the sum of its proper divisors (691097119351396).

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

421204344004400 is a wasteful number, since it uses less digits than its factorization.

421204344004400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8702569131 (or 8702569109 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 421204344004400 its reverse (4400443402124), we get a palindrome (425604787406524).

The spelling of 421204344004400 in words is "four hundred twenty-one trillion, two hundred four billion, three hundred forty-four million, four thousand, four hundred".