424001 has 2 divisors, whose sum is σ = 424002. Its totient is φ = 424000.

The previous prime is 423991. The next prime is 424003. The reversal of 424001 is 100424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384400 + 39601 = 620^2 + 199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424001 is a prime.

Together with 424003, 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 (424003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212000 + 212001.

It is an arithmetic number, because the mean of its divisors is an integer number (212001).

2⁴²⁴⁰⁰¹ is an apocalyptic number.

It is an amenable number.

424001 is a deficient number, since it is larger than the sum of its proper divisors (1).

424001 is an equidigital number, since it uses as much as digits as its factorization.

424001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 424001 is about 651.1535917124. The cubic root of 424001 is about 75.1257741455.

Adding to 424001 its reverse (100424), we get a palindrome (524425).

The spelling of 424001 in words is "four hundred twenty-four thousand, one", and thus it is an iban number.