1241869 has 2 divisors, whose sum is σ = 1241870. Its totient is φ = 1241868.

The previous prime is 1241827. The next prime is 1241879. The reversal of 1241869 is 9681421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 697225 + 544644 = 835^2 + 738^2 .

It is an emirp because it is prime and its reverse (9681421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1241869 - 2⁷ = 1241741 is a prime.

It is a super-2 number, since 2×1241869² = 3084477226322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1241869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241819) 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, 620934 + 620935.

It is an arithmetic number, because the mean of its divisors is an integer number (620935).

2^1241869 is an apocalyptic number.

It is an amenable number.

1241869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241869 is an equidigital number, since it uses as much as digits as its factorization.

1241869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 31.

The square root of 1241869 is about 1114.3917623529. The cubic root of 1241869 is about 107.4876567764.

The spelling of 1241869 in words is "one million, two hundred forty-one thousand, eight hundred sixty-nine".