202120249 has 2 divisors, whose sum is σ = 202120250. Its totient is φ = 202120248.

The previous prime is 202120187. The next prime is 202120273. The reversal of 202120249 is 942021202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201640000 + 480249 = 14200^2 + 693^2 .

It is a cyclic number.

It is not a de Polignac number, because 202120249 - 2¹¹ = 202118201 is a prime.

It is not a weakly prime, because it can be changed into another prime (202120349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060124 + 101060125.

It is an arithmetic number, because the mean of its divisors is an integer number (101060125).

Almost surely, 2^202120249 is an apocalyptic number.

It is an amenable number.

202120249 is a deficient number, since it is larger than the sum of its proper divisors (1).

202120249 is an equidigital number, since it uses as much as digits as its factorization.

202120249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 202120249 is about 14216.9001192243. The cubic root of 202120249 is about 586.8628362498.

The spelling of 202120249 in words is "two hundred two million, one hundred twenty thousand, two hundred forty-nine".