11123140 has 24 divisors (see below), whose sum is σ = 26695872. Its totient is φ = 3813600.

The previous prime is 11123137. The next prime is 11123143. The reversal of 11123140 is 4132111.

11123140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11123137) and next prime (11123143).

It is a self number, because there is not a number n which added to its sum of digits gives 11123140.

It is not an unprimeable number, because it can be changed into a prime (11123143) 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, 39586 + ... + 39865.

It is an arithmetic number, because the mean of its divisors is an integer number (1112328).

Almost surely, 2^11123140 is an apocalyptic number.

11123140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123140 is an abundant number, since it is smaller than the sum of its proper divisors (15572732).

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

11123140 is a wasteful number, since it uses less digits than its factorization.

11123140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79467 (or 79465 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 11123140 is about 3335.1371785880. The cubic root of 11123140 is about 223.2248129984.

Adding to 11123140 its reverse (4132111), we get a palindrome (15255251).

The spelling of 11123140 in words is "eleven million, one hundred twenty-three thousand, one hundred forty".