1321378 has 8 divisors (see below), whose sum is σ = 1993680. Its totient is φ = 656820.

The previous prime is 1321363. The next prime is 1321379. The reversal of 1321378 is 8731231.

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

It is not an unprimeable number, because it can be changed into a prime (1321379) 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, 1488 + ... + 2203.

It is an arithmetic number, because the mean of its divisors is an integer number (249210).

2^1321378 is an apocalyptic number.

1321378 is a deficient number, since it is larger than the sum of its proper divisors (672302).

1321378 is a wasteful number, since it uses less digits than its factorization.

1321378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3872.

The product of its digits is 1008, while the sum is 25.

The square root of 1321378 is about 1149.5120704020. The cubic root of 1321378 is about 109.7342898108.

The spelling of 1321378 in words is "one million, three hundred twenty-one thousand, three hundred seventy-eight".