11509242 has 16 divisors (see below), whose sum is σ = 23343552. Its totient is φ = 3782240.

The previous prime is 11509229. The next prime is 11509243. The reversal of 11509242 is 24290511.

It is not an unprimeable number, because it can be changed into a prime (11509243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13083 + ... + 13934.

It is an arithmetic number, because the mean of its divisors is an integer number (1458972).

Almost surely, 2^11509242 is an apocalyptic number.

11509242 is an abundant number, since it is smaller than the sum of its proper divisors (11834310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11509242 is a wasteful number, since it uses less digits than its factorization.

11509242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27093.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 11509242 is about 3392.5273764555. The cubic root of 11509242 is about 225.7783218024.

Adding to 11509242 its reverse (24290511), we get a palindrome (35799753).

The spelling of 11509242 in words is "eleven million, five hundred nine thousand, two hundred forty-two".