1213841 has 2 divisors, whose sum is σ = 1213842. Its totient is φ = 1213840.

The previous prime is 1213837. The next prime is 1213873. The reversal of 1213841 is 1483121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1050625 + 163216 = 1025^2 + 404^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213841 - 2² = 1213837 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1213801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606920 + 606921.

It is an arithmetic number, because the mean of its divisors is an integer number (606921).

2^1213841 is an apocalyptic number.

It is an amenable number.

1213841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213841 is an equidigital number, since it uses as much as digits as its factorization.

1213841 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 1213841 is about 1101.7445257409. The cubic root of 1213841 is about 106.6728587985.

Adding to 1213841 its reverse (1483121), we get a palindrome (2696962).

The spelling of 1213841 in words is "one million, two hundred thirteen thousand, eight hundred forty-one".