203200423442 has 4 divisors (see below), whose sum is σ = 304800635166. Its totient is φ = 101600211720.

The previous prime is 203200423397. The next prime is 203200423487. The reversal of 203200423442 is 244324002302.

It is a happy number.

203200423442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244324002302 = 2 ⋅122162001151.

It is an interprime number because it is at equal distance from previous prime (203200423397) and next prime (203200423487).

It can be written as a sum of positive squares in only one way, i.e., 152661336961 + 50539086481 = 390719^2 + 224809^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50800105859 + ... + 50800105862.

Almost surely, 2^203200423442 is an apocalyptic number.

203200423442 is a deficient number, since it is larger than the sum of its proper divisors (101600211724).

203200423442 is a wasteful number, since it uses less digits than its factorization.

203200423442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101600211723.

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 203200423442 its reverse (244324002302), we get a palindrome (447524425744).

The spelling of 203200423442 in words is "two hundred three billion, two hundred million, four hundred twenty-three thousand, four hundred forty-two".