200430021 has 32 divisors (see below), whose sum is σ = 299427840. Its totient is φ = 118227200.

The previous prime is 200430019. The next prime is 200430029. The reversal of 200430021 is 120034002.

It is a cyclic number.

It is not a de Polignac number, because 200430021 - 2¹ = 200430019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200429979 and 200430006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200430029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219556 + ... + 220466.

It is an arithmetic number, because the mean of its divisors is an integer number (9357120).

Almost surely, 2^200430021 is an apocalyptic number.

It is an amenable number.

200430021 is a deficient number, since it is larger than the sum of its proper divisors (98997819).

200430021 is a wasteful number, since it uses less digits than its factorization.

200430021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 200430021 is about 14157.3309984615. The cubic root of 200430021 is about 585.2223772872. Note that the first 3 decimals are identical.

Adding to 200430021 its reverse (120034002), we get a palindrome (320464023).

The spelling of 200430021 in words is "two hundred million, four hundred thirty thousand, twenty-one".