1111042403 has 8 divisors (see below), whose sum is σ = 1149733200. Its totient is φ = 1072376928.

The previous prime is 1111042397. The next prime is 1111042421. The reversal of 1111042403 is 3042401111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111042403 - 2⁸ = 1111042147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111042433) 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 7 ways as a sum of consecutive naturals, for example, 142925 + ... + 150497.

It is an arithmetic number, because the mean of its divisors is an integer number (143716650).

Almost surely, 2^1111042403 is an apocalyptic number.

1111042403 is a deficient number, since it is larger than the sum of its proper divisors (38690797).

1111042403 is an equidigital number, since it uses as much as digits as its factorization.

1111042403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12661.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1111042403 is about 33332.3026957335. The cubic root of 1111042403 is about 1035.7228190036.

Adding to 1111042403 its reverse (3042401111), we get a palindrome (4153443514).

The spelling of 1111042403 in words is "one billion, one hundred eleven million, forty-two thousand, four hundred three".