424012321 has 2 divisors, whose sum is σ = 424012322. Its totient is φ = 424012320.

The previous prime is 424012301. The next prime is 424012339. The reversal of 424012321 is 123210424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 422878096 + 1134225 = 20564^2 + 1065^2 .

It is a cyclic number.

It is not a de Polignac number, because 424012321 - 2¹¹ = 424010273 is a prime.

It is not a weakly prime, because it can be changed into another prime (424012301) 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 as a sum of consecutive naturals, namely, 212006160 + 212006161.

It is an arithmetic number, because the mean of its divisors is an integer number (212006161).

Almost surely, 2^424012321 is an apocalyptic number.

It is an amenable number.

424012321 is a deficient number, since it is larger than the sum of its proper divisors (1).

424012321 is an equidigital number, since it uses as much as digits as its factorization.

424012321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 424012321 is about 20591.5594601283. The cubic root of 424012321 is about 751.2644276915.

Adding to 424012321 its reverse (123210424), we get a palindrome (547222745).

It can be divided in two parts, 4240 and 12321, that added together give a palindrome (16561).

The spelling of 424012321 in words is "four hundred twenty-four million, twelve thousand, three hundred twenty-one".