14016721 has 4 divisors (see below), whose sum is σ = 14841252. Its totient is φ = 13192192.

The previous prime is 14016719. The next prime is 14016727. The reversal of 14016721 is 12761041.

14016721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12761041 = 37 ⋅344893.

It can be written as a sum of positive squares in 2 ways, for example, as 13140625 + 876096 = 3625^2 + 936^2 .

It is a cyclic number.

It is not a de Polignac number, because 14016721 - 2¹ = 14016719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14016692 and 14016701.

It is not an unprimeable number, because it can be changed into a prime (14016727) 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, 412240 + ... + 412273.

It is an arithmetic number, because the mean of its divisors is an integer number (3710313).

Almost surely, 2^14016721 is an apocalyptic number.

It is an amenable number.

14016721 is a deficient number, since it is larger than the sum of its proper divisors (824531).

14016721 is an equidigital number, since it uses as much as digits as its factorization.

14016721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824530.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 14016721 is about 3743.8911576059. The cubic root of 14016721 is about 241.1101405967.

Adding to 14016721 its reverse (12761041), we get a palindrome (26777762).

It can be divided in two parts, 140 and 16721, that added together give a palindrome (16861).

The spelling of 14016721 in words is "fourteen million, sixteen thousand, seven hundred twenty-one".