1120003243 has 4 divisors (see below), whose sum is σ = 1125631600. Its totient is φ = 1114374888.

The previous prime is 1120003223. The next prime is 1120003253. The reversal of 1120003243 is 3423000211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3423000211 = 137 ⋅24985403.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1120003243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1120003223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2813880 + ... + 2814277.

It is an arithmetic number, because the mean of its divisors is an integer number (281407900).

Almost surely, 2^1120003243 is an apocalyptic number.

1120003243 is a deficient number, since it is larger than the sum of its proper divisors (5628357).

1120003243 is an equidigital number, since it uses as much as digits as its factorization.

1120003243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628356.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1120003243 is about 33466.4495129077. The cubic root of 1120003243 is about 1038.4998227061.

Adding to 1120003243 its reverse (3423000211), we get a palindrome (4543003454).

The spelling of 1120003243 in words is "one billion, one hundred twenty million, three thousand, two hundred forty-three".