420141641 has 2 divisors, whose sum is σ = 420141642. Its totient is φ = 420141640.

The previous prime is 420141593. The next prime is 420141721. The reversal of 420141641 is 146141024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324180025 + 95961616 = 18005^2 + 9796^2 .

It is a cyclic number.

It is not a de Polignac number, because 420141641 - 2²⁶ = 353032777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420141541) 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, 210070820 + 210070821.

It is an arithmetic number, because the mean of its divisors is an integer number (210070821).

Almost surely, 2^420141641 is an apocalyptic number.

It is an amenable number.

420141641 is a deficient number, since it is larger than the sum of its proper divisors (1).

420141641 is an equidigital number, since it uses as much as digits as its factorization.

420141641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 420141641 is about 20497.3569271748. The cubic root of 420141641 is about 748.9714142898.

Adding to 420141641 its reverse (146141024), we get a palindrome (566282665).

The spelling of 420141641 in words is "four hundred twenty million, one hundred forty-one thousand, six hundred forty-one".