11042440 has 32 divisors (see below), whose sum is σ = 25272000. Its totient is φ = 4341184.

The previous prime is 11042429. The next prime is 11042453. The reversal of 11042440 is 4424011.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21 + ... + 4699.

It is an arithmetic number, because the mean of its divisors is an integer number (789750).

Almost surely, 2^11042440 is an apocalyptic number.

11042440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11042440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12636000).

11042440 is an abundant number, since it is smaller than the sum of its proper divisors (14229560).

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

11042440 is a wasteful number, since it uses less digits than its factorization.

11042440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749 (or 4745 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 11042440 is about 3323.0167017335. The cubic root of 11042440 is about 222.6836593260.

Adding to 11042440 its reverse (4424011), we get a palindrome (15466451).

It can be divided in two parts, 1 and 1042440, that added together give a square (1042441 = 1021²).

The spelling of 11042440 in words is "eleven million, forty-two thousand, four hundred forty".