203111421242 has 8 divisors (see below), whose sum is σ = 304751467956. Its totient is φ = 101527598592.

The previous prime is 203111421239. The next prime is 203111421259. The reversal of 203111421242 is 242124111302.

203111421242 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 170419526761 + 32691894481 = 412819^2 + 180809^2 .

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14046983 + ... + 14061434.

Almost surely, 2^203111421242 is an apocalyptic number.

203111421242 is a deficient number, since it is larger than the sum of its proper divisors (101640046714).

203111421242 is a wasteful number, since it uses less digits than its factorization.

203111421242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28112032.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 203111421242 its reverse (242124111302), we get a palindrome (445235532544).

The spelling of 203111421242 in words is "two hundred three billion, one hundred eleven million, four hundred twenty-one thousand, two hundred forty-two".