12478033 has 4 divisors (see below), whose sum is σ = 12908340. Its totient is φ = 12047728.

The previous prime is 12478031. The next prime is 12478043. The reversal of 12478033 is 33087421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33087421 = 139 ⋅238039.

It can be written as a sum of positive squares in 2 ways, for example, as 2289169 + 10188864 = 1513^2 + 3192^2 .

It is a cyclic number.

It is not a de Polignac number, because 12478033 - 2¹ = 12478031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12477992 and 12478010.

It is not an unprimeable number, because it can be changed into a prime (12478031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215110 + ... + 215167.

It is an arithmetic number, because the mean of its divisors is an integer number (3227085).

Almost surely, 2^12478033 is an apocalyptic number.

It is an amenable number.

12478033 is a deficient number, since it is larger than the sum of its proper divisors (430307).

12478033 is an equidigital number, since it uses as much as digits as its factorization.

12478033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430306.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 12478033 is about 3532.4259369448. The cubic root of 12478033 is about 231.9434129231.

The spelling of 12478033 in words is "twelve million, four hundred seventy-eight thousand, thirty-three".