1281241 has 8 divisors (see below), whose sum is σ = 1401344. Its totient is φ = 1164240.

The previous prime is 1281229. The next prime is 1281253. The reversal of 1281241 is 1421821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1281229) and next prime (1281253).

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

It is a cyclic number.

It is not a de Polignac number, because 1281241 - 2¹¹ = 1279193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1281211) 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, 136 + ... + 1606.

It is an arithmetic number, because the mean of its divisors is an integer number (175168).

2^1281241 is an apocalyptic number.

It is an amenable number.

1281241 is a deficient number, since it is larger than the sum of its proper divisors (120103).

1281241 is a wasteful number, since it uses less digits than its factorization.

1281241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551.

The product of its digits is 128, while the sum is 19.

The square root of 1281241 is about 1131.9191667253. The cubic root of 1281241 is about 108.6117828325.

It can be divided in two parts, 128 and 1241, that added together give a square (1369 = 37²).

The spelling of 1281241 in words is "one million, two hundred eighty-one thousand, two hundred forty-one".