1241813 has 2 divisors, whose sum is σ = 1241814. Its totient is φ = 1241812.

The previous prime is 1241789. The next prime is 1241819. The reversal of 1241813 is 3181421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1067089 + 174724 = 1033^2 + 418^2 .

It is an emirp because it is prime and its reverse (3181421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1241813 - 2⁸ = 1241557 is a prime.

It is a plaindrome in base 14.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 620906 + 620907.

It is an arithmetic number, because the mean of its divisors is an integer number (620907).

2^1241813 is an apocalyptic number.

It is an amenable number.

1241813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241813 is an equidigital number, since it uses as much as digits as its factorization.

1241813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 20.

The square root of 1241813 is about 1114.3666362558. The cubic root of 1241813 is about 107.4860410936.

The spelling of 1241813 in words is "one million, two hundred forty-one thousand, eight hundred thirteen".