13541421 has 4 divisors (see below), whose sum is σ = 18055232. Its totient is φ = 9027612.

The previous prime is 13541419. The next prime is 13541441. The reversal of 13541421 is 12414531.

13541421 is digitally balanced in base 3, 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13541421 - 2¹ = 13541419 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13541441) 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, 2256901 + ... + 2256906.

It is an arithmetic number, because the mean of its divisors is an integer number (4513808).

Almost surely, 2^13541421 is an apocalyptic number.

It is an amenable number.

13541421 is a deficient number, since it is larger than the sum of its proper divisors (4513811).

13541421 is an equidigital number, since it uses as much as digits as its factorization.

13541421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513810.

The product of its digits is 480, while the sum is 21.

The square root of 13541421 is about 3679.8669812916. The cubic root of 13541421 is about 238.3534341152.

Adding to 13541421 its reverse (12414531), we get a palindrome (25955952).

It can be divided in two parts, 1354 and 1421, that added together give a triangular number (2775 = T₇₄).

The spelling of 13541421 in words is "thirteen million, five hundred forty-one thousand, four hundred twenty-one".