242490578707859 has 2 divisors, whose sum is σ = 242490578707860. Its totient is φ = 242490578707858.

The previous prime is 242490578707843. The next prime is 242490578708033. The reversal of 242490578707859 is 958707875094242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242490578707859 - 2⁴ = 242490578707843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242490578707859.

It is not a weakly prime, because it can be changed into another prime (242490578703859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121245289353929 + 121245289353930.

It is an arithmetic number, because the mean of its divisors is an integer number (121245289353930).

Almost surely, 2^{242490578707859} is an apocalyptic number.

242490578707859 is a deficient number, since it is larger than the sum of its proper divisors (1).

242490578707859 is an equidigital number, since it uses as much as digits as its factorization.

242490578707859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2844979200, while the sum is 77.

The spelling of 242490578707859 in words is "two hundred forty-two trillion, four hundred ninety billion, five hundred seventy-eight million, seven hundred seven thousand, eight hundred fifty-nine".