1241491 has 2 divisors, whose sum is σ = 1241492. Its totient is φ = 1241490.

The previous prime is 1241489. The next prime is 1241507. The reversal of 1241491 is 1941421.

It is a weak prime.

It is an emirp because it is prime and its reverse (1941421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1241491 - 2¹ = 1241489 is a prime.

Together with 1241489, it forms a pair of twin primes.

1241491 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1241291) 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 as a sum of consecutive naturals, namely, 620745 + 620746.

It is an arithmetic number, because the mean of its divisors is an integer number (620746).

2^1241491 is an apocalyptic number.

1241491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241491 is an equidigital number, since it uses as much as digits as its factorization.

1241491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 22.

The square root of 1241491 is about 1114.2221502017. Note that the first 3 decimals coincide. The cubic root of 1241491 is about 107.4767499746.

The spelling of 1241491 in words is "one million, two hundred forty-one thousand, four hundred ninety-one".