14540721 has 8 divisors (see below), whose sum is σ = 20879040. Its totient is φ = 8948112.

The previous prime is 14540717. The next prime is 14540723. The reversal of 14540721 is 12704541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 14540721 - 2² = 14540717 is a prime.

It is a super-2 number, since 2×14540721² = 422865134399682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 14540691 and 14540700.

It is not an unprimeable number, because it can be changed into a prime (14540723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186381 + ... + 186458.

It is an arithmetic number, because the mean of its divisors is an integer number (2609880).

Almost surely, 2^14540721 is an apocalyptic number.

It is an amenable number.

14540721 is a deficient number, since it is larger than the sum of its proper divisors (6338319).

14540721 is a wasteful number, since it uses less digits than its factorization.

14540721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372855.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 14540721 is about 3813.2297334412. The cubic root of 14540721 is about 244.0780062781.

The spelling of 14540721 in words is "fourteen million, five hundred forty thousand, seven hundred twenty-one".