200421351 has 16 divisors (see below), whose sum is σ = 319761120. Its totient is φ = 123336000.

The previous prime is 200421311. The next prime is 200421383. The reversal of 200421351 is 153124002.

It is a de Polignac number, because none of the positive numbers 2^k-200421351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200421311) 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 in 15 ways as a sum of consecutive naturals, for example, 285150 + ... + 285851.

It is an arithmetic number, because the mean of its divisors is an integer number (19985070).

Almost surely, 2^200421351 is an apocalyptic number.

200421351 is a deficient number, since it is larger than the sum of its proper divisors (119339769).

200421351 is a wasteful number, since it uses less digits than its factorization.

200421351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571023 (or 571017 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 200421351 is about 14157.0247933667. The cubic root of 200421351 is about 585.2139388455.

Adding to 200421351 its reverse (153124002), we get a palindrome (353545353).

The spelling of 200421351 in words is "two hundred million, four hundred twenty-one thousand, three hundred fifty-one".