14728121 has 2 divisors, whose sum is σ = 14728122. Its totient is φ = 14728120.

The previous prime is 14728093. The next prime is 14728127. The reversal of 14728121 is 12182741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14714896 + 13225 = 3836^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 14728121 - 2¹⁸ = 14465977 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (14728127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7364060 + 7364061.

It is an arithmetic number, because the mean of its divisors is an integer number (7364061).

Almost surely, 2^14728121 is an apocalyptic number.

It is an amenable number.

14728121 is a deficient number, since it is larger than the sum of its proper divisors (1).

14728121 is an equidigital number, since it uses as much as digits as its factorization.

14728121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 896, while the sum is 26.

The square root of 14728121 is about 3837.7234136920. The cubic root of 14728121 is about 245.1220882555.

The spelling of 14728121 in words is "fourteen million, seven hundred twenty-eight thousand, one hundred twenty-one".