202001 has 2 divisors, whose sum is σ = 202002. Its totient is φ = 202000.

The previous prime is 201997. The next prime is 202021. The reversal of 202001 is 100202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201601 + 400 = 449^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 202001 - 2² = 201997 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (202021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101000 + 101001.

It is an arithmetic number, because the mean of its divisors is an integer number (101001).

2²⁰²⁰⁰¹ is an apocalyptic number.

It is an amenable number.

202001 is a deficient number, since it is larger than the sum of its proper divisors (1).

202001 is an equidigital number, since it uses as much as digits as its factorization.

202001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 202001 is about 449.4452135689. The cubic root of 202001 is about 58.6747399071.

Adding to 202001 its reverse (100202), we get a palindrome (302203).

Multiplying 202001 by its reverse (100202), we get a palindrome (20240904202).

The spelling of 202001 in words is "two hundred two thousand, one", and thus it is an iban number.