1320427 has 2 divisors, whose sum is σ = 1320428. Its totient is φ = 1320426.

The previous prime is 1320421. The next prime is 1320433. The reversal of 1320427 is 7240231.

It is a balanced prime because it is at equal distance from previous prime (1320421) and next prime (1320433).

It is a cyclic number.

It is not a de Polignac number, because 1320427 - 2¹¹ = 1318379 is a prime.

It is equal to p₁₀₁₄₆₇ and since 1320427 and 101467 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1320421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660213 + 660214.

It is an arithmetic number, because the mean of its divisors is an integer number (660214).

2^1320427 is an apocalyptic number.

1320427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320427 is an equidigital number, since it uses as much as digits as its factorization.

1320427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 1320427 is about 1149.0983421796. The cubic root of 1320427 is about 109.7079581189.

Adding to 1320427 its reverse (7240231), we get a palindrome (8560658).

It can be divided in two parts, 13204 and 27, that added together give a palindrome (13231).

The spelling of 1320427 in words is "one million, three hundred twenty thousand, four hundred twenty-seven".