4205404221 has 8 divisors (see below), whose sum is σ = 5684016960. Its totient is φ = 2765197152.

The previous prime is 4205404219. The next prime is 4205404241. The reversal of 4205404221 is 1224045024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4205404221 - 2¹ = 4205404219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4205404191 and 4205404200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4205404241) 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 7 ways as a sum of consecutive naturals, for example, 9601161 + ... + 9601598.

It is an arithmetic number, because the mean of its divisors is an integer number (710502120).

Almost surely, 2^4205404221 is an apocalyptic number.

It is an amenable number.

4205404221 is a deficient number, since it is larger than the sum of its proper divisors (1478612739).

4205404221 is a wasteful number, since it uses less digits than its factorization.

4205404221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19202835.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 4205404221 is about 64849.0880506426. The cubic root of 4205404221 is about 1614.1203593474.

Adding to 4205404221 its reverse (1224045024), we get a palindrome (5429449245).

The spelling of 4205404221 in words is "four billion, two hundred five million, four hundred four thousand, two hundred twenty-one".