14787121 has 2 divisors, whose sum is σ = 14787122. Its totient is φ = 14787120.

The previous prime is 14787119. The next prime is 14787133. The reversal of 14787121 is 12178741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13432225 + 1354896 = 3665^2 + 1164^2 .

It is a cyclic number.

It is not a de Polignac number, because 14787121 - 2¹ = 14787119 is a prime.

Together with 14787119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (14787151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7393560 + 7393561.

It is an arithmetic number, because the mean of its divisors is an integer number (7393561).

Almost surely, 2^14787121 is an apocalyptic number.

It is an amenable number.

14787121 is a deficient number, since it is larger than the sum of its proper divisors (1).

14787121 is an equidigital number, since it uses as much as digits as its factorization.

14787121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3136, while the sum is 31.

The square root of 14787121 is about 3845.4025797048. The cubic root of 14787121 is about 245.4489671218.

The spelling of 14787121 in words is "fourteen million, seven hundred eighty-seven thousand, one hundred twenty-one".