13125443 has 4 divisors (see below), whose sum is σ = 13191600. Its totient is φ = 13059288.

The previous prime is 13125439. The next prime is 13125451. The reversal of 13125443 is 34452131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13125443 - 2² = 13125439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13125403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32780 + ... + 33177.

It is an arithmetic number, because the mean of its divisors is an integer number (3297900).

Almost surely, 2^13125443 is an apocalyptic number.

13125443 is a deficient number, since it is larger than the sum of its proper divisors (66157).

13125443 is an equidigital number, since it uses as much as digits as its factorization.

13125443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66156.

The product of its digits is 1440, while the sum is 23.

The square root of 13125443 is about 3622.9053258400. The cubic root of 13125443 is about 235.8873528760.

Adding to 13125443 its reverse (34452131), we get a palindrome (47577574).

The spelling of 13125443 in words is "thirteen million, one hundred twenty-five thousand, four hundred forty-three".