11143140 has 48 divisors (see below), whose sum is σ = 31375680. Its totient is φ = 2954880.

The previous prime is 11143127. The next prime is 11143147. The reversal of 11143140 is 4134111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11143147) 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 15 ways as a sum of consecutive naturals, for example, 13335 + ... + 14145.

It is an arithmetic number, because the mean of its divisors is an integer number (653660).

Almost surely, 2^11143140 is an apocalyptic number.

11143140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11143140 is an abundant number, since it is smaller than the sum of its proper divisors (20232540).

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

11143140 is a wasteful number, since it uses less digits than its factorization.

11143140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 11143140 is about 3338.1342094050. The cubic root of 11143140 is about 223.3585229378.

Adding to 11143140 its reverse (4134111), we get a palindrome (15277251).

The spelling of 11143140 in words is "eleven million, one hundred forty-three thousand, one hundred forty".