13125406 has 16 divisors (see below), whose sum is σ = 23025024. Its totient is φ = 5494104.

The previous prime is 13125403. The next prime is 13125407. The reversal of 13125406 is 60452131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10300 + ... + 11503.

It is an arithmetic number, because the mean of its divisors is an integer number (1439064).

Almost surely, 2^13125406 is an apocalyptic number.

13125406 is a deficient number, since it is larger than the sum of its proper divisors (9899618).

13125406 is a wasteful number, since it uses less digits than its factorization.

13125406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21855.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 13125406 is about 3622.9002194375. The cubic root of 13125406 is about 235.8871312241.

Adding to 13125406 its reverse (60452131), we get a palindrome (73577537).

It can be divided in two parts, 13125 and 406, that added together give a palindrome (13531).

The spelling of 13125406 in words is "thirteen million, one hundred twenty-five thousand, four hundred six".