12478 has 8 divisors (see below), whose sum is σ = 19872. Its totient is φ = 5856.

The previous prime is 12473. The next prime is 12479. The reversal of 12478 is 87421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 10 and base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12473) 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, 150 + ... + 217.

It is an arithmetic number, because the mean of its divisors is an integer number (2484).

2¹²⁴⁷⁸ is an apocalyptic number.

12478 is a deficient number, since it is larger than the sum of its proper divisors (7394).

12478 is a wasteful number, since it uses less digits than its factorization.

12478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386.

The product of its digits is 448, while the sum is 22.

The square root of 12478 is about 111.7049685556. The cubic root of 12478 is about 23.1943208453.

Adding to 12478 its reverse (87421), we get a palindrome (99899).

It can be divided in two parts, 124 and 78, that added together give a palindrome (202).

The spelling of 12478 in words is "twelve thousand, four hundred seventy-eight".