1212843241 has 2 divisors, whose sum is σ = 1212843242. Its totient is φ = 1212843240.

The previous prime is 1212843209. The next prime is 1212843253. The reversal of 1212843241 is 1423482121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1196883216 + 15960025 = 34596^2 + 3995^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212843241 - 2⁵ = 1212843209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212843271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606421620 + 606421621.

It is an arithmetic number, because the mean of its divisors is an integer number (606421621).

Almost surely, 2^1212843241 is an apocalyptic number.

It is an amenable number.

1212843241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212843241 is an equidigital number, since it uses as much as digits as its factorization.

1212843241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 28.

The square root of 1212843241 is about 34825.8989977287. The cubic root of 1212843241 is about 1066.4362295940.

The spelling of 1212843241 in words is "one billion, two hundred twelve million, eight hundred forty-three thousand, two hundred forty-one".