13140402 has 32 divisors (see below), whose sum is σ = 29450304. Its totient is φ = 3873600.

The previous prime is 13140389. The next prime is 13140409. The reversal of 13140402 is 20404131.

It is not an unprimeable number, because it can be changed into a prime (13140409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249 + ... + 5132.

It is an arithmetic number, because the mean of its divisors is an integer number (920322).

Almost surely, 2^13140402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13140402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14725152).

13140402 is an abundant number, since it is smaller than the sum of its proper divisors (16309902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13140402 is a wasteful number, since it uses less digits than its factorization.

13140402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5434.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 13140402 is about 3624.9692412488. The cubic root of 13140402 is about 235.9769320553.

Adding to 13140402 its reverse (20404131), we get a palindrome (33544533).

The spelling of 13140402 in words is "thirteen million, one hundred forty thousand, four hundred two".