200021043343042 has 4 divisors (see below), whose sum is σ = 300031565014566. Its totient is φ = 100010521671520.

The previous prime is 200021043343021. The next prime is 200021043343049. The reversal of 200021043343042 is 240343340120002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 139235303639601 + 60785739703441 = 11799801^2 + 7796521^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 200021043343042.

It is not an unprimeable number, because it can be changed into a prime (200021043343049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50005260835759 + ... + 50005260835762.

Almost surely, 2^{200021043343042} is an apocalyptic number.

200021043343042 is a deficient number, since it is larger than the sum of its proper divisors (100010521671524).

200021043343042 is a wasteful number, since it uses less digits than its factorization.

200021043343042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100010521671523.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 200021043343042 its reverse (240343340120002), we get a palindrome (440364383463044).

The spelling of 200021043343042 in words is "two hundred trillion, twenty-one billion, forty-three million, three hundred forty-three thousand, forty-two".