203040242 has 4 divisors (see below), whose sum is σ = 304560366. Its totient is φ = 101520120.

The previous prime is 203040209. The next prime is 203040259. The reversal of 203040242 is 242040302.

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., 203034001 + 6241 = 14249^2 + 79^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 203040242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50760059 + ... + 50760062.

Almost surely, 2^203040242 is an apocalyptic number.

203040242 is a deficient number, since it is larger than the sum of its proper divisors (101520124).

203040242 is a wasteful number, since it uses less digits than its factorization.

203040242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101520123.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 203040242 is about 14249.2189961415. The cubic root of 203040242 is about 587.7518987397.

Adding to 203040242 its reverse (242040302), we get a palindrome (445080544).

The spelling of 203040242 in words is "two hundred three million, forty thousand, two hundred forty-two".