1241342209 has 2 divisors, whose sum is σ = 1241342210. Its totient is φ = 1241342208.

The previous prime is 1241342197. The next prime is 1241342213. The reversal of 1241342209 is 9022431421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 764356609 + 476985600 = 27647^2 + 21840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1241342209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1241342279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620671104 + 620671105.

It is an arithmetic number, because the mean of its divisors is an integer number (620671105).

Almost surely, 2^1241342209 is an apocalyptic number.

It is an amenable number.

1241342209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241342209 is an equidigital number, since it uses as much as digits as its factorization.

1241342209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1241342209 is about 35232.6866560017. The cubic root of 1241342209 is about 1074.7245615582.

The spelling of 1241342209 in words is "one billion, two hundred forty-one million, three hundred forty-two thousand, two hundred nine".