13421161 has 4 divisors (see below), whose sum is σ = 14453572. Its totient is φ = 12388752.

The previous prime is 13421141. The next prime is 13421173. The reversal of 13421161 is 16112431.

13421161 is digitally balanced in base 2 and base 3, because in such bases 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 2 ways, for example, as 3308761 + 10112400 = 1819^2 + 3180^2 .

It is a cyclic number.

It is not a de Polignac number, because 13421161 - 2⁵ = 13421129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13421131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516186 + ... + 516211.

It is an arithmetic number, because the mean of its divisors is an integer number (3613393).

Almost surely, 2^13421161 is an apocalyptic number.

It is an amenable number.

13421161 is a deficient number, since it is larger than the sum of its proper divisors (1032411).

13421161 is a wasteful number, since it uses less digits than its factorization.

13421161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032410.

The product of its digits is 144, while the sum is 19.

The square root of 13421161 is about 3663.4902756797. The cubic root of 13421161 is about 237.6457373303.

Adding to 13421161 its reverse (16112431), we get a palindrome (29533592).

The spelling of 13421161 in words is "thirteen million, four hundred twenty-one thousand, one hundred sixty-one".