420013001 has 2 divisors, whose sum is σ = 420013002. Its totient is φ = 420013000.

The previous prime is 420012997. The next prime is 420013039. The reversal of 420013001 is 100310024.

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., 403005625 + 17007376 = 20075^2 + 4124^2 .

It is a cyclic number.

It is not a de Polignac number, because 420013001 - 2² = 420012997 is a prime.

It is not a weakly prime, because it can be changed into another prime (420013901) 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, 210006500 + 210006501.

It is an arithmetic number, because the mean of its divisors is an integer number (210006501).

Almost surely, 2^420013001 is an apocalyptic number.

It is an amenable number.

420013001 is a deficient number, since it is larger than the sum of its proper divisors (1).

420013001 is an equidigital number, since it uses as much as digits as its factorization.

420013001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 420013001 is about 20494.2187213858. The cubic root of 420013001 is about 748.8949658508.

Adding to 420013001 its reverse (100310024), we get a palindrome (520323025).

The spelling of 420013001 in words is "four hundred twenty million, thirteen thousand, one".