200120257 has 2 divisors, whose sum is σ = 200120258. Its totient is φ = 200120256.

The previous prime is 200120251. The next prime is 200120267. The reversal of 200120257 is 752021002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190329616 + 9790641 = 13796^2 + 3129^2 .

It is a cyclic number.

It is not a de Polignac number, because 200120257 - 2¹¹ = 200118209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (200120251) 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, 100060128 + 100060129.

It is an arithmetic number, because the mean of its divisors is an integer number (100060129).

Almost surely, 2^200120257 is an apocalyptic number.

It is an amenable number.

200120257 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120257 is an equidigital number, since it uses as much as digits as its factorization.

200120257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 200120257 is about 14146.3867118074. The cubic root of 200120257 is about 584.9207353584.

Adding to 200120257 its reverse (752021002), we get a palindrome (952141259).

The spelling of 200120257 in words is "two hundred million, one hundred twenty thousand, two hundred fifty-seven".