1321478 has 8 divisors (see below), whose sum is σ = 2098872. Its totient is φ = 621856.

The previous prime is 1321477. The next prime is 1321483. The reversal of 1321478 is 8741231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19400 + ... + 19467.

It is an arithmetic number, because the mean of its divisors is an integer number (262359).

2^1321478 is an apocalyptic number.

1321478 is a deficient number, since it is larger than the sum of its proper divisors (777394).

1321478 is a wasteful number, since it uses less digits than its factorization.

1321478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38886.

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

The square root of 1321478 is about 1149.5555662951. Note that the first 4 decimals coincide. The cubic root of 1321478 is about 109.7370579191.

The spelling of 1321478 in words is "one million, three hundred twenty-one thousand, four hundred seventy-eight".