13421641 has 4 divisors (see below), whose sum is σ = 13622032. Its totient is φ = 13221252.

The previous prime is 13421591. The next prime is 13421651. The reversal of 13421641 is 14612431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14612431 = 109 ⋅134059.

It is a cyclic number.

It is not a de Polignac number, because 13421641 - 2⁹ = 13421129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13421651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100095 + ... + 100228.

It is an arithmetic number, because the mean of its divisors is an integer number (3405508).

Almost surely, 2^13421641 is an apocalyptic number.

It is an amenable number.

13421641 is a deficient number, since it is larger than the sum of its proper divisors (200391).

13421641 is an equidigital number, since it uses as much as digits as its factorization.

13421641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200390.

The product of its digits is 576, while the sum is 22.

The square root of 13421641 is about 3663.5557863911. Note that the first 3 decimals coincide. The cubic root of 13421641 is about 237.6485703836.

The spelling of 13421641 in words is "thirteen million, four hundred twenty-one thousand, six hundred forty-one".