1136243 has 4 divisors (see below), whose sum is σ = 1172928. Its totient is φ = 1099560.

The previous prime is 1136237. The next prime is 1136287. The reversal of 1136243 is 3426311.

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 1136243 - 2⁴ = 1136227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1136203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18296 + ... + 18357.

It is an arithmetic number, because the mean of its divisors is an integer number (293232).

2^1136243 is an apocalyptic number.

1136243 is a deficient number, since it is larger than the sum of its proper divisors (36685).

1136243 is an equidigital number, since it uses as much as digits as its factorization.

1136243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36684.

The product of its digits is 432, while the sum is 20.

The square root of 1136243 is about 1065.9469968061. The cubic root of 1136243 is about 104.3495082785.

It can be divided in two parts, 11362 and 43, that multiplied together give a triangular number (488566 = T₉₈₈).

The spelling of 1136243 in words is "one million, one hundred thirty-six thousand, two hundred forty-three".