1242241203 has 16 divisors (see below), whose sum is σ = 1893441536. Its totient is φ = 709663680.

The previous prime is 1242241199. The next prime is 1242241237. The reversal of 1242241203 is 3021422421.

It is not a de Polignac number, because 1242241203 - 2² = 1242241199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1242241203.

It is not an unprimeable number, because it can be changed into a prime (1242241243) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 126975 + ... + 136407.

It is an arithmetic number, because the mean of its divisors is an integer number (118340096).

Almost surely, 2^1242241203 is an apocalyptic number.

1242241203 is a deficient number, since it is larger than the sum of its proper divisors (651200333).

1242241203 is an equidigital number, since it uses as much as digits as its factorization.

1242241203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15714.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1242241203 is about 35245.4423010976. The cubic root of 1242241203 is about 1074.9839414944.

Adding to 1242241203 its reverse (3021422421), we get a palindrome (4263663624).

The spelling of 1242241203 in words is "one billion, two hundred forty-two million, two hundred forty-one thousand, two hundred three".