424244321 has 4 divisors (see below), whose sum is σ = 434110512. Its totient is φ = 414378132.

The previous prime is 424244309. The next prime is 424244323. The reversal of 424244321 is 123442424.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 424244321 - 2¹⁰ = 424243297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424244323) 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 3 ways as a sum of consecutive naturals, for example, 4933031 + ... + 4933116.

It is an arithmetic number, because the mean of its divisors is an integer number (108527628).

Almost surely, 2^424244321 is an apocalyptic number.

It is an amenable number.

424244321 is a deficient number, since it is larger than the sum of its proper divisors (9866191).

424244321 is an equidigital number, since it uses as much as digits as its factorization.

424244321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9866190.

The product of its digits is 6144, while the sum is 26.

The square root of 424244321 is about 20597.1920659103. The cubic root of 424244321 is about 751.4014217990.

Adding to 424244321 its reverse (123442424), we get a palindrome (547686745).

The spelling of 424244321 in words is "four hundred twenty-four million, two hundred forty-four thousand, three hundred twenty-one".