424412321 has 2 divisors, whose sum is σ = 424412322. Its totient is φ = 424412320.

The previous prime is 424412299. The next prime is 424412323. The reversal of 424412321 is 123214424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238362721 + 186049600 = 15439^2 + 13640^2 .

It is a cyclic number.

It is not a de Polignac number, because 424412321 - 2⁶ = 424412257 is a prime.

Together with 424412323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (424412323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212206160 + 212206161.

It is an arithmetic number, because the mean of its divisors is an integer number (212206161).

Almost surely, 2^424412321 is an apocalyptic number.

It is an amenable number.

424412321 is a deficient number, since it is larger than the sum of its proper divisors (1).

424412321 is an equidigital number, since it uses as much as digits as its factorization.

424412321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 23.

The square root of 424412321 is about 20601.2698880433. The cubic root of 424412321 is about 751.5005932538.

Adding to 424412321 its reverse (123214424), we get a palindrome (547626745).

The spelling of 424412321 in words is "four hundred twenty-four million, four hundred twelve thousand, three hundred twenty-one".