1113125243 has 4 divisors (see below), whose sum is σ = 1128373608. Its totient is φ = 1097876880.

The previous prime is 1113125191. The next prime is 1113125249. The reversal of 1113125243 is 3425213111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1113125243 - 2⁶ = 1113125179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113125249) 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, 7624073 + ... + 7624218.

It is an arithmetic number, because the mean of its divisors is an integer number (282093402).

Almost surely, 2^1113125243 is an apocalyptic number.

1113125243 is a deficient number, since it is larger than the sum of its proper divisors (15248365).

1113125243 is an equidigital number, since it uses as much as digits as its factorization.

1113125243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15248364.

The product of its digits is 720, while the sum is 23.

The square root of 1113125243 is about 33363.5316326075. The cubic root of 1113125243 is about 1036.3696284835.

Adding to 1113125243 its reverse (3425213111), we get a palindrome (4538338354).

The spelling of 1113125243 in words is "one billion, one hundred thirteen million, one hundred twenty-five thousand, two hundred forty-three".