1113243 has 8 divisors (see below), whose sum is σ = 1489488. Its totient is φ = 739584.

The previous prime is 1113239. The next prime is 1113253. The reversal of 1113243 is 3423111.

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

It is not a de Polignac number, because 1113243 - 2² = 1113239 is a prime.

1113243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1113253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 871 + ... + 1727.

It is an arithmetic number, because the mean of its divisors is an integer number (186186).

2^1113243 is an apocalyptic number.

1113243 is a deficient number, since it is larger than the sum of its proper divisors (376245).

1113243 is an equidigital number, since it uses as much as digits as its factorization.

1113243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293.

The product of its digits is 72, while the sum is 15.

The square root of 1113243 is about 1055.1033124770. The cubic root of 1113243 is about 103.6406172881.

Adding to 1113243 its reverse (3423111), we get a palindrome (4536354).

It can be divided in two parts, 11132 and 43, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 1113243 in words is "one million, one hundred thirteen thousand, two hundred forty-three".