242989578199 has 2 divisors, whose sum is σ = 242989578200. Its totient is φ = 242989578198.

The previous prime is 242989578121. The next prime is 242989578229. The reversal of 242989578199 is 991875989242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242989578199 - 2⁷ = 242989578071 is a prime.

It is a super-2 number, since 2×242989578199² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242989578119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121494789099 + 121494789100.

It is an arithmetic number, because the mean of its divisors is an integer number (121494789100).

Almost surely, 2^242989578199 is an apocalyptic number.

242989578199 is a deficient number, since it is larger than the sum of its proper divisors (1).

242989578199 is an equidigital number, since it uses as much as digits as its factorization.

242989578199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235146240, while the sum is 73.

The spelling of 242989578199 in words is "two hundred forty-two billion, nine hundred eighty-nine million, five hundred seventy-eight thousand, one hundred ninety-nine".