1543423 has 8 divisors (see below), whose sum is σ = 1786880. Its totient is φ = 1305720.

The previous prime is 1543417. The next prime is 1543429. The reversal of 1543423 is 3243451.

It is an interprime number because it is at equal distance from previous prime (1543417) and next prime (1543429).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1543423 - 2⁵ = 1543391 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1543394 and 1543403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1543429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843 + ... + 1948.

It is an arithmetic number, because the mean of its divisors is an integer number (223360).

2^1543423 is an apocalyptic number.

1543423 is a deficient number, since it is larger than the sum of its proper divisors (243457).

1543423 is an equidigital number, since it uses as much as digits as its factorization.

1543423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877.

The product of its digits is 1440, while the sum is 22.

The square root of 1543423 is about 1242.3457650751. The cubic root of 1543423 is about 115.5655319228.

Adding to 1543423 its reverse (3243451), we get a palindrome (4786874).

The spelling of 1543423 in words is "one million, five hundred forty-three thousand, four hundred twenty-three".