242089499 has 2 divisors, whose sum is σ = 242089500. Its totient is φ = 242089498.

The previous prime is 242089493. The next prime is 242089501. The reversal of 242089499 is 994980242.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242089499 is a prime.

Together with 242089501, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242089493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121044749 + 121044750.

It is an arithmetic number, because the mean of its divisors is an integer number (121044750).

Almost surely, 2^242089499 is an apocalyptic number.

242089499 is a deficient number, since it is larger than the sum of its proper divisors (1).

242089499 is an equidigital number, since it uses as much as digits as its factorization.

242089499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 242089499 is about 15559.2255269984. The cubic root of 242089499 is about 623.2447811586.

It can be divided in two parts, 2420 and 89499, that added together give a palindrome (91919).

The spelling of 242089499 in words is "two hundred forty-two million, eighty-nine thousand, four hundred ninety-nine".