1427281 has 2 divisors, whose sum is σ = 1427282. Its totient is φ = 1427280.

The previous prime is 1427233. The next prime is 1427291. The reversal of 1427281 is 1827241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1380625 + 46656 = 1175^2 + 216^2 .

It is a cyclic number.

It is not a de Polignac number, because 1427281 - 2¹⁷ = 1296209 is a prime.

It is a super-2 number, since 2×1427281² = 4074262105922, which contains 22 as substring.

It is a zygodrome in base 5.

It is not a weakly prime, because it can be changed into another prime (1427221) 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, 713640 + 713641.

It is an arithmetic number, because the mean of its divisors is an integer number (713641).

2^1427281 is an apocalyptic number.

It is an amenable number.

1427281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427281 is an equidigital number, since it uses as much as digits as its factorization.

1427281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 896, while the sum is 25.

The square root of 1427281 is about 1194.6886623719. The cubic root of 1427281 is about 112.5908665049.

The spelling of 1427281 in words is "one million, four hundred twenty-seven thousand, two hundred eighty-one".