1241891 has 16 divisors (see below), whose sum is σ = 1505280. Its totient is φ = 1002240.

The previous prime is 1241879. The next prime is 1241893. The reversal of 1241891 is 1981421.

It is a cyclic number.

It is not a de Polignac number, because 1241891 - 2⁶ = 1241827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1241891.

It is not an unprimeable number, because it can be changed into a prime (1241893) 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 15 ways as a sum of consecutive naturals, for example, 12755 + ... + 12851.

It is an arithmetic number, because the mean of its divisors is an integer number (94080).

2^1241891 is an apocalyptic number.

1241891 is a deficient number, since it is larger than the sum of its proper divisors (263389).

1241891 is an equidigital number, since it uses as much as digits as its factorization.

1241891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194.

The product of its digits is 576, while the sum is 26.

The square root of 1241891 is about 1114.4016331646. The cubic root of 1241891 is about 107.4882914957.

The spelling of 1241891 in words is "one million, two hundred forty-one thousand, eight hundred ninety-one".