Search a number

12433 has 2 divisors, whose sum is σ = 12434. Its totient is φ = 12432.

The previous prime is 12421. The next prime is 12437. The reversal of 12433 is 33421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8464 + 3969 = 92^2 + 63^2 .

It is a cyclic number.

It is not a de Polignac number, because 12433 - 25 = 12401 is a prime.

It is the 112-nd Hogben number.

It is not a weakly prime, because it can be changed into another prime (12437) by changing a digit.

It is a nontrivial repunit in base 111.

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, 6216 + 6217.

It is an arithmetic number, because the mean of its divisors is an integer number (6217).

212433 is an apocalyptic number.

It is an amenable number.

12433 is a deficient number, since it is larger than the sum of its proper divisors (1).

12433 is an equidigital number, since it uses as much as digits as its factorization.

12433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 13.

The square root of 12433 is about 111.5033631780. The cubic root of 12433 is about 23.1664050025.

Adding to 12433 its reverse (33421), we get a palindrome (45854).

The spelling of 12433 in words is "twelve thousand, four hundred thirty-three".