420140801 has 2 divisors, whose sum is σ = 420140802. Its totient is φ = 420140800.

The previous prime is 420140797. The next prime is 420140807. The reversal of 420140801 is 108041024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419266576 + 874225 = 20476^2 + 935^2 .

It is a cyclic number.

It is not a de Polignac number, because 420140801 - 2² = 420140797 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420140807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210070400 + 210070401.

It is an arithmetic number, because the mean of its divisors is an integer number (210070401).

Almost surely, 2^420140801 is an apocalyptic number.

It is an amenable number.

420140801 is a deficient number, since it is larger than the sum of its proper divisors (1).

420140801 is an equidigital number, since it uses as much as digits as its factorization.

420140801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 420140801 is about 20497.3364367178. The cubic root of 420140801 is about 748.9709151435.

Adding to 420140801 its reverse (108041024), we get a palindrome (528181825).

The spelling of 420140801 in words is "four hundred twenty million, one hundred forty thousand, eight hundred one".