203124242 has 4 divisors (see below), whose sum is σ = 304686366. Its totient is φ = 101562120.

The previous prime is 203124227. The next prime is 203124263. The reversal of 203124242 is 242421302.

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., 201384481 + 1739761 = 14191^2 + 1319^2 .

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, 50781059 + ... + 50781062.

Almost surely, 2^203124242 is an apocalyptic number.

203124242 is a deficient number, since it is larger than the sum of its proper divisors (101562124).

203124242 is a wasteful number, since it uses less digits than its factorization.

203124242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101562123.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 203124242 is about 14252.1662213153. The cubic root of 203124242 is about 587.8329407245.

Adding to 203124242 its reverse (242421302), we get a palindrome (445545544).

The spelling of 203124242 in words is "two hundred three million, one hundred twenty-four thousand, two hundred forty-two".