16427 has 2 divisors, whose sum is σ = 16428. Its totient is φ = 16426.

The previous prime is 16421. The next prime is 16433. The reversal of 16427 is 72461.

It is a balanced prime because it is at equal distance from previous prime (16421) and next prime (16433).

It is an emirp because it is prime and its reverse (72461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16427 - 2⁴ = 16411 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16399 and 16408.

It is not a weakly prime, because it can be changed into another prime (16421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8213 + 8214.

It is an arithmetic number, because the mean of its divisors is an integer number (8214).

2¹⁶⁴²⁷ is an apocalyptic number.

16427 is a deficient number, since it is larger than the sum of its proper divisors (1).

16427 is an equidigital number, since it uses as much as digits as its factorization.

16427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 20.

The square root of 16427 is about 128.1678586854. The cubic root of 16427 is about 25.4206169022.

Adding to 16427 its reverse (72461), we get a palindrome (88888).

It can be divided in two parts, 164 and 27, that added together give a palindrome (191).

The spelling of 16427 in words is "sixteen thousand, four hundred twenty-seven".