1290241207 has 2 divisors, whose sum is σ = 1290241208. Its totient is φ = 1290241206.

The previous prime is 1290241123. The next prime is 1290241217. The reversal of 1290241207 is 7021420921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1290241207 - 2⁷ = 1290241079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1290241217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645120603 + 645120604.

It is an arithmetic number, because the mean of its divisors is an integer number (645120604).

Almost surely, 2^1290241207 is an apocalyptic number.

1290241207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290241207 is an equidigital number, since it uses as much as digits as its factorization.

1290241207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1290241207 is about 35919.9277142925. The cubic root of 1290241207 is about 1088.6550780258.

The spelling of 1290241207 in words is "one billion, two hundred ninety million, two hundred forty-one thousand, two hundred seven".