1312478 has 8 divisors (see below), whose sum is σ = 2032320. Its totient is φ = 635040.

The previous prime is 1312471. The next prime is 1312513. The reversal of 1312478 is 8742131.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312471) 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, 10523 + ... + 10646.

It is an arithmetic number, because the mean of its divisors is an integer number (254040).

2^1312478 is an apocalyptic number.

1312478 is a deficient number, since it is larger than the sum of its proper divisors (719842).

1312478 is a wasteful number, since it uses less digits than its factorization.

1312478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21202.

The product of its digits is 1344, while the sum is 26.

The square root of 1312478 is about 1145.6343221116. The cubic root of 1312478 is about 109.4873667514.

The spelling of 1312478 in words is "one million, three hundred twelve thousand, four hundred seventy-eight".