424034221 has 4 divisors (see below), whose sum is σ = 456652252. Its totient is φ = 391416192.

The previous prime is 424034207. The next prime is 424034243. The reversal of 424034221 is 122430424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148108900 + 275925321 = 12170^2 + 16611^2 .

It is a cyclic number.

It is not a de Polignac number, because 424034221 - 2¹⁷ = 423903149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 424034192 and 424034201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424034021) 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 3 ways as a sum of consecutive naturals, for example, 16308996 + ... + 16309021.

It is an arithmetic number, because the mean of its divisors is an integer number (114163063).

Almost surely, 2^424034221 is an apocalyptic number.

It is an amenable number.

424034221 is a deficient number, since it is larger than the sum of its proper divisors (32618031).

424034221 is a wasteful number, since it uses less digits than its factorization.

424034221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32618030.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 424034221 is about 20592.0912245454. The cubic root of 424034221 is about 751.2773615984.

Adding to 424034221 its reverse (122430424), we get a palindrome (546464645).

The spelling of 424034221 in words is "four hundred twenty-four million, thirty-four thousand, two hundred twenty-one".