200200042042421 has 16 divisors (see below), whose sum is σ = 202250116632960. Its totient is φ = 198153357104640.

The previous prime is 200200042042411. The next prime is 200200042042493. The reversal of 200200042042421 is 124240240002002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200200042042421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200200042042411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581505485 + ... + 581849661.

It is an arithmetic number, because the mean of its divisors is an integer number (12640632289560).

Almost surely, 2^{200200042042421} is an apocalyptic number.

It is an amenable number.

200200042042421 is a deficient number, since it is larger than the sum of its proper divisors (2050074590539).

200200042042421 is a wasteful number, since it uses less digits than its factorization.

200200042042421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349084.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 200200042042421 its reverse (124240240002002), we get a palindrome (324440282044423).

The spelling of 200200042042421 in words is "two hundred trillion, two hundred billion, forty-two million, forty-two thousand, four hundred twenty-one".