402242201 has 2 divisors, whose sum is σ = 402242202. Its totient is φ = 402242200.

The previous prime is 402242149. The next prime is 402242221. The reversal of 402242201 is 102242204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395214400 + 7027801 = 19880^2 + 2651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402242201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402242201.

It is not a weakly prime, because it can be changed into another prime (402242221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201121100 + 201121101.

It is an arithmetic number, because the mean of its divisors is an integer number (201121101).

Almost surely, 2^402242201 is an apocalyptic number.

It is an amenable number.

402242201 is a deficient number, since it is larger than the sum of its proper divisors (1).

402242201 is an equidigital number, since it uses as much as digits as its factorization.

402242201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 402242201 is about 20055.9766902537. The cubic root of 402242201 is about 738.1804584858.

Adding to 402242201 its reverse (102242204), we get a palindrome (504484405).

The spelling of 402242201 in words is "four hundred two million, two hundred forty-two thousand, two hundred one".