424132321 has 2 divisors, whose sum is σ = 424132322. Its totient is φ = 424132320.

The previous prime is 424132283. The next prime is 424132327. The reversal of 424132321 is 123231424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421686225 + 2446096 = 20535^2 + 1564^2 .

It is a cyclic number.

It is not a de Polignac number, because 424132321 - 2⁹ = 424131809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 424132292 and 424132301.

It is not a weakly prime, because it can be changed into another prime (424132327) 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 as a sum of consecutive naturals, namely, 212066160 + 212066161.

It is an arithmetic number, because the mean of its divisors is an integer number (212066161).

Almost surely, 2^424132321 is an apocalyptic number.

It is an amenable number.

424132321 is a deficient number, since it is larger than the sum of its proper divisors (1).

424132321 is an equidigital number, since it uses as much as digits as its factorization.

424132321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 22.

The square root of 424132321 is about 20594.4730692485. The cubic root of 424132321 is about 751.3352929498.

Adding to 424132321 its reverse (123231424), we get a palindrome (547363745).

The spelling of 424132321 in words is "four hundred twenty-four million, one hundred thirty-two thousand, three hundred twenty-one".