424541221 has 16 divisors (see below), whose sum is σ = 487033344. Its totient is φ = 366591744.

The previous prime is 424541207. The next prime is 424541261. The reversal of 424541221 is 122145424.

It is a cyclic number.

It is not a de Polignac number, because 424541221 - 2⁷ = 424541093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424541261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31156 + ... + 42658.

It is an arithmetic number, because the mean of its divisors is an integer number (30439584).

Almost surely, 2^424541221 is an apocalyptic number.

It is an amenable number.

424541221 is a deficient number, since it is larger than the sum of its proper divisors (62492123).

424541221 is a wasteful number, since it uses less digits than its factorization.

424541221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11700.

The product of its digits is 2560, while the sum is 25.

The square root of 424541221 is about 20604.3980984643. The cubic root of 424541221 is about 751.5766659913.

Adding to 424541221 its reverse (122145424), we get a palindrome (546686645).

The spelling of 424541221 in words is "four hundred twenty-four million, five hundred forty-one thousand, two hundred twenty-one".