200240042 has 16 divisors (see below), whose sum is σ = 324031752. Its totient is φ = 92451840.

The previous prime is 200240039. The next prime is 200240077. The reversal of 200240042 is 240042002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 197993041 + 2247001 = 14071^2 + 1499^2 .

It is a junction number, because it is equal to n+sod(n) for n = 200239999 and 200240026.

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 in 7 ways as a sum of consecutive naturals, for example, 53759 + ... + 57362.

Almost surely, 2^200240042 is an apocalyptic number.

200240042 is a deficient number, since it is larger than the sum of its proper divisors (123791710).

200240042 is a wasteful number, since it uses less digits than its factorization.

200240042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111193.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 200240042 is about 14150.6198450810. The cubic root of 200240042 is about 585.0374164589.

Adding to 200240042 its reverse (240042002), we get a palindrome (440282044).

The spelling of 200240042 in words is "two hundred million, two hundred forty thousand, forty-two".