203142402242 has 16 divisors (see below), whose sum is σ = 334344681720. Its totient is φ = 91989011712.

The previous prime is 203142402233. The next prime is 203142402269. The reversal of 203142402242 is 242204241302.

It can be written as a sum of positive squares in 4 ways, for example, as 184608574921 + 18533827321 = 429661^2 + 136139^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73707767 + ... + 73710522.

Almost surely, 2^203142402242 is an apocalyptic number.

203142402242 is a deficient number, since it is larger than the sum of its proper divisors (131202279478).

203142402242 is a wasteful number, since it uses less digits than its factorization.

203142402242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147418357.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 203142402242 its reverse (242204241302), we get a palindrome (445346643544).

The spelling of 203142402242 in words is "two hundred three billion, one hundred forty-two million, four hundred two thousand, two hundred forty-two".