200121430 has 32 divisors (see below), whose sum is σ = 373063680. Its totient is φ = 77211360.

The previous prime is 200121421. The next prime is 200121479. The reversal of 200121430 is 34121002.

It is a self number, because there is not a number n which added to its sum of digits gives 200121430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112891 + ... + 114649.

It is an arithmetic number, because the mean of its divisors is an integer number (11658240).

Almost surely, 2^200121430 is an apocalyptic number.

200121430 is a deficient number, since it is larger than the sum of its proper divisors (172942250).

200121430 is a wasteful number, since it uses less digits than its factorization.

200121430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 200121430 is about 14146.4281710968. The cubic root of 200121430 is about 584.9218781890.

Adding to 200121430 its reverse (34121002), we get a palindrome (234242432).

The spelling of 200121430 in words is "two hundred million, one hundred twenty-one thousand, four hundred thirty".