1241789 has 2 divisors, whose sum is σ = 1241790. Its totient is φ = 1241788.

The previous prime is 1241771. The next prime is 1241813. The reversal of 1241789 is 9871421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1085764 + 156025 = 1042^2 + 395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1241789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620894 + 620895.

It is an arithmetic number, because the mean of its divisors is an integer number (620895).

2^1241789 is an apocalyptic number.

It is an amenable number.

1241789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241789 is an equidigital number, since it uses as much as digits as its factorization.

1241789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 1241789 is about 1114.3558677550. The cubic root of 1241789 is about 107.4853486432.

The spelling of 1241789 in words is "one million, two hundred forty-one thousand, seven hundred eighty-nine".