420201241 has 2 divisors, whose sum is σ = 420201242. Its totient is φ = 420201240.

The previous prime is 420201239. The next prime is 420201253. The reversal of 420201241 is 142102024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342250000 + 77951241 = 18500^2 + 8829^2 .

It is a cyclic number.

It is not a de Polignac number, because 420201241 - 2¹ = 420201239 is a prime.

Together with 420201239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (420201281) 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, 210100620 + 210100621.

It is an arithmetic number, because the mean of its divisors is an integer number (210100621).

Almost surely, 2^420201241 is an apocalyptic number.

It is an amenable number.

420201241 is a deficient number, since it is larger than the sum of its proper divisors (1).

420201241 is an equidigital number, since it uses as much as digits as its factorization.

420201241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 420201241 is about 20498.8107216004. The cubic root of 420201241 is about 749.0068282084.

Adding to 420201241 its reverse (142102024), we get a palindrome (562303265).

The spelling of 420201241 in words is "four hundred twenty million, two hundred one thousand, two hundred forty-one".