1288241 has 4 divisors (see below), whose sum is σ = 1293300. Its totient is φ = 1283184.

The previous prime is 1288213. The next prime is 1288247. The reversal of 1288241 is 1428821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1428821 = 31 ⋅46091.

It can be written as a sum of positive squares in 2 ways, for example, as 87025 + 1201216 = 295^2 + 1096^2 .

It is a cyclic number.

It is not a de Polignac number, because 1288241 - 2¹⁰ = 1287217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1288241.

It is not an unprimeable number, because it can be changed into a prime (1288247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2126 + ... + 2663.

It is an arithmetic number, because the mean of its divisors is an integer number (323325).

2^1288241 is an apocalyptic number.

It is an amenable number.

1288241 is a deficient number, since it is larger than the sum of its proper divisors (5059).

1288241 is an equidigital number, since it uses as much as digits as its factorization.

1288241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5058.

The product of its digits is 1024, while the sum is 26.

The square root of 1288241 is about 1135.0070484363. The cubic root of 1288241 is about 108.8092221584.

The spelling of 1288241 in words is "one million, two hundred eighty-eight thousand, two hundred forty-one".