1301281 has 2 divisors, whose sum is σ = 1301282. Its totient is φ = 1301280.

The previous prime is 1301273. The next prime is 1301297. The reversal of 1301281 is 1821031.

It is an a-pointer prime, because the next prime (1301297) can be obtained adding 1301281 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1299600 + 1681 = 1140^2 + 41^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301281 - 2³ = 1301273 is a prime.

It is a super-2 number, since 2×1301281² = 3386664481922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1301221) 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, 650640 + 650641.

It is an arithmetic number, because the mean of its divisors is an integer number (650641).

2^1301281 is an apocalyptic number.

It is an amenable number.

1301281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301281 is an equidigital number, since it uses as much as digits as its factorization.

1301281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1301281 is about 1140.7370424423. The cubic root of 1301281 is about 109.1751245964.

The spelling of 1301281 in words is "one million, three hundred one thousand, two hundred eighty-one".