12784133 has 2 divisors, whose sum is σ = 12784134. Its totient is φ = 12784132.

The previous prime is 12784117. The next prime is 12784139. The reversal of 12784133 is 33148721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11303044 + 1481089 = 3362^2 + 1217^2 .

It is an emirp because it is prime and its reverse (33148721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12784133 - 2⁴ = 12784117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p₈₃₆₁₂₉ and since 12784133 and 836129 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 12784096 and 12784105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12784139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6392066 + 6392067.

It is an arithmetic number, because the mean of its divisors is an integer number (6392067).

Almost surely, 2^12784133 is an apocalyptic number.

It is an amenable number.

12784133 is a deficient number, since it is larger than the sum of its proper divisors (1).

12784133 is an equidigital number, since it uses as much as digits as its factorization.

12784133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 12784133 is about 3575.4905957085. The cubic root of 12784133 is about 233.8247220291.

The spelling of 12784133 in words is "twelve million, seven hundred eighty-four thousand, one hundred thirty-three".