1143423 has 8 divisors (see below), whose sum is σ = 1694000. Its totient is φ = 762264.

The previous prime is 1143407. The next prime is 1143433. The reversal of 1143423 is 3243411.

It is not a de Polignac number, because 1143423 - 2⁴ = 1143407 is a prime.

It is a Duffinian number.

1143423 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1143396 and 1143405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21148 + ... + 21201.

It is an arithmetic number, because the mean of its divisors is an integer number (211750).

2^1143423 is an apocalyptic number.

1143423 is a deficient number, since it is larger than the sum of its proper divisors (550577).

1143423 is an equidigital number, since it uses as much as digits as its factorization.

1143423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42358 (or 42352 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 1143423 is about 1069.3095903432. The cubic root of 1143423 is about 104.5688442368.

Adding to 1143423 its reverse (3243411), we get a palindrome (4386834).

It can be divided in two parts, 11 and 43423, that added together give a palindrome (43434).

The spelling of 1143423 in words is "one million, one hundred forty-three thousand, four hundred twenty-three".