1001241 has 20 divisors (see below), whose sum is σ = 1533312. Its totient is φ = 650808.

The previous prime is 1001237. The next prime is 1001267. The reversal of 1001241 is 1421001.

It is a happy number.

It is not a de Polignac number, because 1001241 - 2² = 1001237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001291) 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 19 ways as a sum of consecutive naturals, for example, 3676 + ... + 3938.

2^1001241 is an apocalyptic number.

It is an amenable number.

1001241 is a deficient number, since it is larger than the sum of its proper divisors (532071).

1001241 is an equidigital number, since it uses as much as digits as its factorization.

1001241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1001241 is about 1000.6203076092. The cubic root of 1001241 is about 100.0413495664.

Adding to 1001241 its reverse (1421001), we get a palindrome (2422242).

The spelling of 1001241 in words is "one million, one thousand, two hundred forty-one".