13721041 has 8 divisors (see below), whose sum is σ = 14480640. Its totient is φ = 12975072.

The previous prime is 13721033. The next prime is 13721047. The reversal of 13721041 is 14012731.

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 13721041 - 2³ = 13721033 is a prime.

It is a super-2 number, since 2×13721041² = 376533932247362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13721047) 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, 1305 + ... + 5398.

It is an arithmetic number, because the mean of its divisors is an integer number (1810080).

Almost surely, 2^13721041 is an apocalyptic number.

It is an amenable number.

13721041 is a deficient number, since it is larger than the sum of its proper divisors (759599).

13721041 is an equidigital number, since it uses as much as digits as its factorization.

13721041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6815.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 13721041 is about 3704.1923546166. The cubic root of 13721041 is about 239.4026870924.

Adding to 13721041 its reverse (14012731), we get a palindrome (27733772).

The spelling of 13721041 in words is "thirteen million, seven hundred twenty-one thousand, forty-one".