420201401 has 2 divisors, whose sum is σ = 420201402. Its totient is φ = 420201400.

The previous prime is 420201391. The next prime is 420201409. The reversal of 420201401 is 104102024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 301369600 + 118831801 = 17360^2 + 10901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420201401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420201409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210100700 + 210100701.

It is an arithmetic number, because the mean of its divisors is an integer number (210100701).

Almost surely, 2^420201401 is an apocalyptic number.

It is an amenable number.

420201401 is a deficient number, since it is larger than the sum of its proper divisors (1).

420201401 is an equidigital number, since it uses as much as digits as its factorization.

420201401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 420201401 is about 20498.8146242655. The cubic root of 420201401 is about 749.0069232748.

Adding to 420201401 its reverse (104102024), we get a palindrome (524303425).

The spelling of 420201401 in words is "four hundred twenty million, two hundred one thousand, four hundred one".