1143121 has 12 divisors (see below), whose sum is σ = 1364580. Its totient is φ = 954240.

The previous prime is 1143113. The next prime is 1143143. The reversal of 1143121 is 1213411.

It can be written as a sum of positive squares in 2 ways, for example, as 112896 + 1030225 = 336^2 + 1015^2 .

It is not a de Polignac number, because 1143121 - 2³ = 1143113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1725 + ... + 2293.

It is an arithmetic number, because the mean of its divisors is an integer number (113715).

2^1143121 is an apocalyptic number.

It is an amenable number.

1143121 is a deficient number, since it is larger than the sum of its proper divisors (221459).

1143121 is an equidigital number, since it uses as much as digits as its factorization.

1143121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624 (or 617 counting only the distinct ones).

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

The square root of 1143121 is about 1069.1683684060. The cubic root of 1143121 is about 104.5596372121.

Adding to 1143121 its reverse (1213411), we get a palindrome (2356532).

The spelling of 1143121 in words is "one million, one hundred forty-three thousand, one hundred twenty-one".