424121 has 2 divisors, whose sum is σ = 424122. Its totient is φ = 424120.

The previous prime is 424117. The next prime is 424129. The reversal of 424121 is 121424.

424121 = 460² + 461².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212521 + 211600 = 461^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 424121 - 2² = 424117 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 424096 and 424105.

It is not a weakly prime, because it can be changed into another prime (424129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212060 + 212061.

It is an arithmetic number, because the mean of its divisors is an integer number (212061).

2⁴²⁴¹²¹ is an apocalyptic number.

424121 is the 461-st centered square number.

It is an amenable number.

424121 is a deficient number, since it is larger than the sum of its proper divisors (1).

424121 is an equidigital number, since it uses as much as digits as its factorization.

424121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64, while the sum is 14.

The square root of 424121 is about 651.2457293526. The cubic root of 424121 is about 75.1328607974.

Adding to 424121 its reverse (121424), we get a palindrome (545545).

It can be divided in two parts, 424 and 121, that added together give a palindrome (545).

The spelling of 424121 in words is "four hundred twenty-four thousand, one hundred twenty-one", and thus it is an iban number.