1273281 has 8 divisors (see below), whose sum is σ = 1743744. Its totient is φ = 825840.

The previous prime is 1273267. The next prime is 1273289. The reversal of 1273281 is 1823721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1273281 - 2¹⁴ = 1256897 is a prime.

It is a super-2 number, since 2×1273281² = 3242489009922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1273289) 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 in 7 ways as a sum of consecutive naturals, for example, 5625 + ... + 5846.

It is an arithmetic number, because the mean of its divisors is an integer number (217968).

2^1273281 is an apocalyptic number.

It is an amenable number.

1273281 is a deficient number, since it is larger than the sum of its proper divisors (470463).

1273281 is a wasteful number, since it uses less digits than its factorization.

1273281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11511.

The product of its digits is 672, while the sum is 24.

The square root of 1273281 is about 1128.3975363319. The cubic root of 1273281 is about 108.3863903158.

The spelling of 1273281 in words is "one million, two hundred seventy-three thousand, two hundred eighty-one".