1143144 has 24 divisors (see below), whose sum is σ = 3096210. Its totient is φ = 381024.

The previous prime is 1143143. The next prime is 1143161. The reversal of 1143144 is 4413411.

It can be written as a sum of positive squares in only one way, i.e., 580644 + 562500 = 762^2 + 750^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1143143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7867 + ... + 8010.

2^1143144 is an apocalyptic number.

It is an amenable number.

1143144 is an abundant number, since it is smaller than the sum of its proper divisors (1953066).

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

1143144 is a wasteful number, since it uses less digits than its factorization.

1143144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15889 (or 15882 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1143144 is about 1069.1791243753. The cubic root of 1143144 is about 104.5603384663.

Adding to 1143144 its reverse (4413411), we get a palindrome (5556555).

The spelling of 1143144 in words is "one million, one hundred forty-three thousand, one hundred forty-four".