5123643 has 16 divisors (see below), whose sum is σ = 7845120. Its totient is φ = 2913696.

The previous prime is 5123639. The next prime is 5123683. The reversal of 5123643 is 3463215.

It is a happy number.

It is not a de Polignac number, because 5123643 - 2² = 5123639 is a prime.

5123643 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5123603) 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 15 ways as a sum of consecutive naturals, for example, 5196 + ... + 6102.

It is an arithmetic number, because the mean of its divisors is an integer number (490320).

Almost surely, 2^5123643 is an apocalyptic number.

5123643 is a deficient number, since it is larger than the sum of its proper divisors (2721477).

5123643 is a wasteful number, since it uses less digits than its factorization.

5123643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186.

The product of its digits is 2160, while the sum is 24.

The square root of 5123643 is about 2263.5465535305. The cubic root of 5123643 is about 172.3956436652.

Adding to 5123643 its reverse (3463215), we get a palindrome (8586858).

The spelling of 5123643 in words is "five million, one hundred twenty-three thousand, six hundred forty-three".