11242540 has 24 divisors (see below), whose sum is σ = 23672880. Its totient is φ = 4484928.

The previous prime is 11242531. The next prime is 11242549. The reversal of 11242540 is 4524211.

It is an interprime number because it is at equal distance from previous prime (11242531) and next prime (11242549).

It is not an unprimeable number, because it can be changed into a prime (11242549) 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 7 ways as a sum of consecutive naturals, for example, 12754 + ... + 13606.

It is an arithmetic number, because the mean of its divisors is an integer number (986370).

Almost surely, 2^11242540 is an apocalyptic number.

11242540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11242540 is an abundant number, since it is smaller than the sum of its proper divisors (12430340).

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

11242540 is a wasteful number, since it uses less digits than its factorization.

11242540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521 (or 1519 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 11242540 is about 3352.9897106910. The cubic root of 11242540 is about 224.0206985550.

Adding to 11242540 its reverse (4524211), we get a palindrome (15766751).

The spelling of 11242540 in words is "eleven million, two hundred forty-two thousand, five hundred forty".