14121817 has 4 divisors (see below), whose sum is σ = 14203620. Its totient is φ = 14040016.

The previous prime is 14121799. The next prime is 14121841. The reversal of 14121817 is 71812141.

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 11978521 + 2143296 = 3461^2 + 1464^2 .

It is a cyclic number.

It is not a de Polignac number, because 14121817 - 2⁷ = 14121689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14121791 and 14121800.

It is not an unprimeable number, because it can be changed into a prime (14128817) 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, 40642 + ... + 40987.

It is an arithmetic number, because the mean of its divisors is an integer number (3550905).

Almost surely, 2^14121817 is an apocalyptic number.

It is an amenable number.

14121817 is a deficient number, since it is larger than the sum of its proper divisors (81803).

14121817 is an equidigital number, since it uses as much as digits as its factorization.

14121817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81802.

The product of its digits is 448, while the sum is 25.

The square root of 14121817 is about 3757.9006107134. The cubic root of 14121817 is about 241.7112474765.

Adding to 14121817 its reverse (71812141), we get a palindrome (85933958).

The spelling of 14121817 in words is "fourteen million, one hundred twenty-one thousand, eight hundred seventeen".