1321379 has 2 divisors, whose sum is σ = 1321380. Its totient is φ = 1321378.

The previous prime is 1321363. The next prime is 1321391. The reversal of 1321379 is 9731231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321379 - 2⁴ = 1321363 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660689 + 660690.

It is an arithmetic number, because the mean of its divisors is an integer number (660690).

2^1321379 is an apocalyptic number.

1321379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321379 is an equidigital number, since it uses as much as digits as its factorization.

1321379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 26.

The square root of 1321379 is about 1149.5125053691. The cubic root of 1321379 is about 109.7343174925.

The spelling of 1321379 in words is "one million, three hundred twenty-one thousand, three hundred seventy-nine".