421325441 has 2 divisors, whose sum is σ = 421325442. Its totient is φ = 421325440.

The previous prime is 421325423. The next prime is 421325459. The reversal of 421325441 is 144523124.

It is a balanced prime because it is at equal distance from previous prime (421325423) and next prime (421325459).

It can be written as a sum of positive squares in only one way, i.e., 308880625 + 112444816 = 17575^2 + 10604^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421325441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421325441.

It is not a weakly prime, because it can be changed into another prime (421325491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210662720 + 210662721.

It is an arithmetic number, because the mean of its divisors is an integer number (210662721).

Almost surely, 2^421325441 is an apocalyptic number.

It is an amenable number.

421325441 is a deficient number, since it is larger than the sum of its proper divisors (1).

421325441 is an equidigital number, since it uses as much as digits as its factorization.

421325441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 26.

The square root of 421325441 is about 20526.2135085846. The cubic root of 421325441 is about 749.6741938951.

Adding to 421325441 its reverse (144523124), we get a palindrome (565848565).

The spelling of 421325441 in words is "four hundred twenty-one million, three hundred twenty-five thousand, four hundred forty-one".