13715121 has 16 divisors (see below), whose sum is σ = 21117824. Its totient is φ = 7755264.

The previous prime is 13715099. The next prime is 13715129. The reversal of 13715121 is 12151731.

It is a happy number.

It is not a de Polignac number, because 13715121 - 2¹⁰ = 13714097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (13715129) 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 15 ways as a sum of consecutive naturals, for example, 1330 + ... + 5403.

It is an arithmetic number, because the mean of its divisors is an integer number (1319864).

Almost surely, 2^13715121 is an apocalyptic number.

It is an amenable number.

13715121 is a deficient number, since it is larger than the sum of its proper divisors (7402703).

13715121 is an equidigital number, since it uses as much as digits as its factorization.

13715121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6840.

The product of its digits is 210, while the sum is 21.

The square root of 13715121 is about 3703.3931738340. The cubic root of 13715121 is about 239.3682517123.

Adding to 13715121 its reverse (12151731), we get a palindrome (25866852).

The spelling of 13715121 in words is "thirteen million, seven hundred fifteen thousand, one hundred twenty-one".