424444121 has 2 divisors, whose sum is σ = 424444122. Its totient is φ = 424444120.

The previous prime is 424444091. The next prime is 424444127. The reversal of 424444121 is 121444424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299809225 + 124634896 = 17315^2 + 11164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424444121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (424444127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212222060 + 212222061.

It is an arithmetic number, because the mean of its divisors is an integer number (212222061).

Almost surely, 2^424444121 is an apocalyptic number.

It is an amenable number.

424444121 is a deficient number, since it is larger than the sum of its proper divisors (1).

424444121 is an equidigital number, since it uses as much as digits as its factorization.

424444121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4096, while the sum is 26.

The square root of 424444121 is about 20602.0416706694. The cubic root of 424444121 is about 751.5193620476.

Adding to 424444121 its reverse (121444424), we get a palindrome (545888545).

The spelling of 424444121 in words is "four hundred twenty-four million, four hundred forty-four thousand, one hundred twenty-one".