421230041 has 2 divisors, whose sum is σ = 421230042. Its totient is φ = 421230040.

The previous prime is 421230037. The next prime is 421230109. The reversal of 421230041 is 140032124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420865225 + 364816 = 20515^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 421230041 - 2² = 421230037 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421230001) 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, 210615020 + 210615021.

It is an arithmetic number, because the mean of its divisors is an integer number (210615021).

Almost surely, 2^421230041 is an apocalyptic number.

It is an amenable number.

421230041 is a deficient number, since it is larger than the sum of its proper divisors (1).

421230041 is an equidigital number, since it uses as much as digits as its factorization.

421230041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 421230041 is about 20523.8895192895. The cubic root of 421230041 is about 749.6176071415.

Adding to 421230041 its reverse (140032124), we get a palindrome (561262165).

The spelling of 421230041 in words is "four hundred twenty-one million, two hundred thirty thousand, forty-one".