13012405 has 32 divisors (see below), whose sum is σ = 18800640. Its totient is φ = 8458560.

The previous prime is 13012403. The next prime is 13012409. The reversal of 13012405 is 50421031.

It is not a de Polignac number, because 13012405 - 2¹ = 13012403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012403) 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 31 ways as a sum of consecutive naturals, for example, 72606 + ... + 72784.

It is an arithmetic number, because the mean of its divisors is an integer number (587520).

Almost surely, 2^13012405 is an apocalyptic number.

It is an amenable number.

13012405 is a deficient number, since it is larger than the sum of its proper divisors (5788235).

13012405 is a wasteful number, since it uses less digits than its factorization.

13012405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 13012405 is about 3607.2711292610. The cubic root of 13012405 is about 235.2082355258.

Adding to 13012405 its reverse (50421031), we get a palindrome (63433436).

The spelling of 13012405 in words is "thirteen million, twelve thousand, four hundred five".