200426021 has 2 divisors, whose sum is σ = 200426022. Its totient is φ = 200426020.

The previous prime is 200425997. The next prime is 200426029. The reversal of 200426021 is 120624002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199204996 + 1221025 = 14114^2 + 1105^2 .

It is a cyclic number.

It is not a de Polignac number, because 200426021 - 2¹⁸ = 200163877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200426029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100213010 + 100213011.

It is an arithmetic number, because the mean of its divisors is an integer number (100213011).

Almost surely, 2^200426021 is an apocalyptic number.

It is an amenable number.

200426021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200426021 is an equidigital number, since it uses as much as digits as its factorization.

200426021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 200426021 is about 14157.1897281911. The cubic root of 200426021 is about 585.2184841494.

The spelling of 200426021 in words is "two hundred million, four hundred twenty-six thousand, twenty-one".