200155320242 has 8 divisors (see below), whose sum is σ = 300235475100. Its totient is φ = 100076828544.

The previous prime is 200155320229. The next prime is 200155320259. The reversal of 200155320242 is 242023551002.

It can be written as a sum of positive squares in 2 ways, for example, as 183921757321 + 16233562921 = 428861^2 + 127411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 50867 + ... + 634742.

Almost surely, 2^200155320242 is an apocalyptic number.

200155320242 is a deficient number, since it is larger than the sum of its proper divisors (100080154858).

200155320242 is a wasteful number, since it uses less digits than its factorization.

200155320242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831580.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 200155320242 its reverse (242023551002), we get a palindrome (442178871244).

The spelling of 200155320242 in words is "two hundred billion, one hundred fifty-five million, three hundred twenty thousand, two hundred forty-two".