421043303205 has 64 divisors (see below), whose sum is σ = 856809984000. Its totient is φ = 192171631680.

The previous prime is 421043303183. The next prime is 421043303237. The reversal of 421043303205 is 502303340124.

421043303205 is a `hidden beast` number, since 4 + 2 + 1 + 0 + 4 + 330 + 320 + 5 = 666.

It is not a de Polignac number, because 421043303205 - 2⁵ = 421043303173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 243246 + ... + 949344.

It is an arithmetic number, because the mean of its divisors is an integer number (13387656000).

Almost surely, 2^421043303205 is an apocalyptic number.

421043303205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

421043303205 is an abundant number, since it is smaller than the sum of its proper divisors (435766680795).

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

421043303205 is a wasteful number, since it uses less digits than its factorization.

421043303205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706751 (or 706745 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 421043303205 its reverse (502303340124), we get a palindrome (923346643329).

The spelling of 421043303205 in words is "four hundred twenty-one billion, forty-three million, three hundred three thousand, two hundred five".