200421307 has 2 divisors, whose sum is σ = 200421308. Its totient is φ = 200421306.

The previous prime is 200421271. The next prime is 200421311. The reversal of 200421307 is 703124002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200421307 is a prime.

It is not a weakly prime, because it can be changed into another prime (200421607) 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, 100210653 + 100210654.

It is an arithmetic number, because the mean of its divisors is an integer number (100210654).

Almost surely, 2^200421307 is an apocalyptic number.

200421307 is a deficient number, since it is larger than the sum of its proper divisors (1).

200421307 is an equidigital number, since it uses as much as digits as its factorization.

200421307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 200421307 is about 14157.0232393678. The cubic root of 200421307 is about 585.2138960200.

Adding to 200421307 its reverse (703124002), we get a palindrome (903545309).

The spelling of 200421307 in words is "two hundred million, four hundred twenty-one thousand, three hundred seven".