13421726 has 4 divisors (see below), whose sum is σ = 20132592. Its totient is φ = 6710862.

The previous prime is 13421717. The next prime is 13421731. The reversal of 13421726 is 62712431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62712431 = 1193 ⋅52567.

It is a junction number, because it is equal to n+sod(n) for n = 13421695 and 13421704.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3355430 + ... + 3355433.

It is an arithmetic number, because the mean of its divisors is an integer number (5033148).

Almost surely, 2^13421726 is an apocalyptic number.

13421726 is a deficient number, since it is larger than the sum of its proper divisors (6710866).

13421726 is an equidigital number, since it uses as much as digits as its factorization.

13421726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710865.

The product of its digits is 2016, while the sum is 26.

The square root of 13421726 is about 3663.5673871242. The cubic root of 13421726 is about 237.6490720631.

The spelling of 13421726 in words is "thirteen million, four hundred twenty-one thousand, seven hundred twenty-six".