13040402 has 8 divisors (see below), whose sum is σ = 20411136. Its totient is φ = 6236692.

The previous prime is 13040381. The next prime is 13040449. The reversal of 13040402 is 20404031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 141698 + ... + 141789.

It is an arithmetic number, because the mean of its divisors is an integer number (2551392).

Almost surely, 2^13040402 is an apocalyptic number.

13040402 is a deficient number, since it is larger than the sum of its proper divisors (7370734).

13040402 is a wasteful number, since it uses less digits than its factorization.

13040402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283512.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 13040402 is about 3611.1496784265. The cubic root of 13040402 is about 235.3768030796.

Adding to 13040402 its reverse (20404031), we get a palindrome (33444433).

It can be divided in two parts, 1 and 3040402, that added together give a palindrome (3040403).

The spelling of 13040402 in words is "thirteen million, forty thousand, four hundred two".