13421261 has 8 divisors (see below), whose sum is σ = 15599040. Its totient is φ = 11308608.

The previous prime is 13421251. The next prime is 13421267. The reversal of 13421261 is 16212431.

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

It is a cyclic number.

It is not a de Polignac number, because 13421261 - 2¹⁰ = 13420237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13421267) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15836 + ... + 16661.

It is an arithmetic number, because the mean of its divisors is an integer number (1949880).

Almost surely, 2^13421261 is an apocalyptic number.

It is an amenable number.

13421261 is a deficient number, since it is larger than the sum of its proper divisors (2177779).

13421261 is an equidigital number, since it uses as much as digits as its factorization.

13421261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32563.

The product of its digits is 288, while the sum is 20.

The square root of 13421261 is about 3663.5039238412. The cubic root of 13421261 is about 237.6463275553.

Adding to 13421261 its reverse (16212431), we get a palindrome (29633692).

The spelling of 13421261 in words is "thirteen million, four hundred twenty-one thousand, two hundred sixty-one".