12438073 has 4 divisors (see below), whose sum is σ = 12521700. Its totient is φ = 12354448.

The previous prime is 12438061. The next prime is 12438077. The reversal of 12438073 is 37083421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37083421 = 19 ⋅1951759.

It can be written as a sum of positive squares in 2 ways, for example, as 6620329 + 5817744 = 2573^2 + 2412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12438073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12438077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41590 + ... + 41887.

It is an arithmetic number, because the mean of its divisors is an integer number (3130425).

Almost surely, 2^12438073 is an apocalyptic number.

It is an amenable number.

12438073 is a deficient number, since it is larger than the sum of its proper divisors (83627).

12438073 is an equidigital number, since it uses as much as digits as its factorization.

12438073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83626.

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

The square root of 12438073 is about 3526.7652317669. The cubic root of 12438073 is about 231.6955541386.

It can be divided in two parts, 1243 and 8073, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 12438073 in words is "twelve million, four hundred thirty-eight thousand, seventy-three".