11154143 has 24 divisors (see below), whose sum is σ = 15104544. Its totient is φ = 8015040.

The previous prime is 11154139. The next prime is 11154161. The reversal of 11154143 is 34145111.

It is a happy number.

It is not a de Polignac number, because 11154143 - 2² = 11154139 is a prime.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11154113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10505 + ... + 11517.

It is an arithmetic number, because the mean of its divisors is an integer number (629356).

Almost surely, 2^11154143 is an apocalyptic number.

11154143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11154143 is a deficient number, since it is larger than the sum of its proper divisors (3950401).

11154143 is a wasteful number, since it uses less digits than its factorization.

11154143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055 (or 1044 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 11154143 is about 3339.7818791053. The cubic root of 11154143 is about 223.4320152500.

Adding to 11154143 its reverse (34145111), we get a palindrome (45299254).

The spelling of 11154143 in words is "eleven million, one hundred fifty-four thousand, one hundred forty-three".