402040201 has 2 divisors, whose sum is σ = 402040202. Its totient is φ = 402040200.

The previous prime is 402040193. The next prime is 402040229. The reversal of 402040201 is 102040204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371525625 + 30514576 = 19275^2 + 5524^2 .

It is a cyclic number.

It is not a de Polignac number, because 402040201 - 2³ = 402040193 is a prime.

It is not a weakly prime, because it can be changed into another prime (402040231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201020100 + 201020101.

It is an arithmetic number, because the mean of its divisors is an integer number (201020101).

Almost surely, 2^402040201 is an apocalyptic number.

It is an amenable number.

402040201 is a deficient number, since it is larger than the sum of its proper divisors (1).

402040201 is an equidigital number, since it uses as much as digits as its factorization.

402040201 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 13.

The square root of 402040201 is about 20050.9401525215. The cubic root of 402040201 is about 738.0568700774.

Adding to 402040201 its reverse (102040204), we get a palindrome (504080405).

The spelling of 402040201 in words is "four hundred two million, forty thousand, two hundred one".