1320901 has 2 divisors, whose sum is σ = 1320902. Its totient is φ = 1320900.

The previous prime is 1320889. The next prime is 1320911. The reversal of 1320901 is 1090231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 756900 + 564001 = 870^2 + 751^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320901 - 2⁷ = 1320773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660450 + 660451.

It is an arithmetic number, because the mean of its divisors is an integer number (660451).

2^1320901 is an apocalyptic number.

It is an amenable number.

1320901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320901 is an equidigital number, since it uses as much as digits as its factorization.

1320901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1320901 is about 1149.3045723393. The cubic root of 1320901 is about 109.7210840120.

The spelling of 1320901 in words is "one million, three hundred twenty thousand, nine hundred one".