12478426 has 8 divisors (see below), whose sum is σ = 19070964. Its totient is φ = 6121440.

The previous prime is 12478409. The next prime is 12478451. The reversal of 12478426 is 62487421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12355225 + 123201 = 3515^2 + 351^2 .

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

It is a super-2 number, since 2×12478426² = 311422230874952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12478391 and 12478400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58755 + ... + 58966.

Almost surely, 2^12478426 is an apocalyptic number.

12478426 is a deficient number, since it is larger than the sum of its proper divisors (6592538).

12478426 is a wasteful number, since it uses less digits than its factorization.

12478426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117776.

The product of its digits is 21504, while the sum is 34.

The square root of 12478426 is about 3532.4815640000. The cubic root of 12478426 is about 231.9458479438.

The spelling of 12478426 in words is "twelve million, four hundred seventy-eight thousand, four hundred twenty-six".