200434021 has 8 divisors (see below), whose sum is σ = 211468320. Its totient is φ = 189448272.

The previous prime is 200434019. The next prime is 200434027. The reversal of 200434021 is 120434002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200434021 - 2¹ = 200434019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200433986 and 200434004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200434027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3490 + ... + 20323.

It is an arithmetic number, because the mean of its divisors is an integer number (26433540).

Almost surely, 2^200434021 is an apocalyptic number.

It is an amenable number.

200434021 is a deficient number, since it is larger than the sum of its proper divisors (11034299).

200434021 is a wasteful number, since it uses less digits than its factorization.

200434021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24275.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 200434021 is about 14157.4722673223. The cubic root of 200434021 is about 585.2262703732.

Adding to 200434021 its reverse (120434002), we get a palindrome (320868023).

The spelling of 200434021 in words is "two hundred million, four hundred thirty-four thousand, twenty-one".