200700421 has 2 divisors, whose sum is σ = 200700422. Its totient is φ = 200700420.

The previous prime is 200700413. The next prime is 200700473. The reversal of 200700421 is 124007002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178516321 + 22184100 = 13361^2 + 4710^2 .

It is a cyclic number.

It is not a de Polignac number, because 200700421 - 2³ = 200700413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200700395 and 200700404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200704421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100350210 + 100350211.

It is an arithmetic number, because the mean of its divisors is an integer number (100350211).

Almost surely, 2^200700421 is an apocalyptic number.

It is an amenable number.

200700421 is a deficient number, since it is larger than the sum of its proper divisors (1).

200700421 is an equidigital number, since it uses as much as digits as its factorization.

200700421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 200700421 is about 14166.8776023512. The cubic root of 200700421 is about 585.4854333919.

Adding to 200700421 its reverse (124007002), we get a palindrome (324707423).

The spelling of 200700421 in words is "two hundred million, seven hundred thousand, four hundred twenty-one".