11540243 has 8 divisors (see below), whose sum is σ = 13557936. Its totient is φ = 9684000.

The previous prime is 11540233. The next prime is 11540251. The reversal of 11540243 is 34204511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11540243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11540203) 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, 40208 + ... + 40493.

It is an arithmetic number, because the mean of its divisors is an integer number (1694742).

Almost surely, 2^11540243 is an apocalyptic number.

11540243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11540243 is a deficient number, since it is larger than the sum of its proper divisors (2017693).

11540243 is a wasteful number, since it uses less digits than its factorization.

11540243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80725.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 11540243 is about 3397.0933163515. The cubic root of 11540243 is about 225.9808569684.

Adding to 11540243 its reverse (34204511), we get a palindrome (45744754).

The spelling of 11540243 in words is "eleven million, five hundred forty thousand, two hundred forty-three".