13405426 has 4 divisors (see below), whose sum is σ = 20108142. Its totient is φ = 6702712.

The previous prime is 13405411. The next prime is 13405429. The reversal of 13405426 is 62450431.

13405426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 13329801 + 75625 = 3651^2 + 275^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13405426.

It is not an unprimeable number, because it can be changed into a prime (13405429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3351355 + ... + 3351358.

Almost surely, 2^13405426 is an apocalyptic number.

13405426 is a deficient number, since it is larger than the sum of its proper divisors (6702716).

13405426 is an equidigital number, since it uses as much as digits as its factorization.

13405426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6702715.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 13405426 is about 3661.3421036554. The cubic root of 13405426 is about 237.5528288759.

Adding to 13405426 its reverse (62450431), we get a palindrome (75855857).

It can be divided in two parts, 13405 and 426, that added together give a palindrome (13831).

The spelling of 13405426 in words is "thirteen million, four hundred five thousand, four hundred twenty-six".