434242221 has 16 divisors (see below), whose sum is σ = 662204928. Its totient is φ = 247950000.

The previous prime is 434242219. The next prime is 434242229. The reversal of 434242221 is 122242434.

It is not a de Polignac number, because 434242221 - 2¹ = 434242219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 434242191 and 434242200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434242229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23346 + ... + 37596.

It is an arithmetic number, because the mean of its divisors is an integer number (41387808).

Almost surely, 2^434242221 is an apocalyptic number.

It is an amenable number.

434242221 is a deficient number, since it is larger than the sum of its proper divisors (227962707).

434242221 is a wasteful number, since it uses less digits than its factorization.

434242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15712.

The product of its digits is 3072, while the sum is 24.

The square root of 434242221 is about 20838.4793351146. The cubic root of 434242221 is about 757.2582539586.

Adding to 434242221 its reverse (122242434), we get a palindrome (556484655).

The spelling of 434242221 in words is "four hundred thirty-four million, two hundred forty-two thousand, two hundred twenty-one".