242124109 has 2 divisors, whose sum is σ = 242124110. Its totient is φ = 242124108.

The previous prime is 242124107. The next prime is 242124133. The reversal of 242124109 is 901421242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188980009 + 53144100 = 13747^2 + 7290^2 .

It is a cyclic number.

It is not a de Polignac number, because 242124109 - 2¹ = 242124107 is a prime.

Together with 242124107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242124101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121062054 + 121062055.

It is an arithmetic number, because the mean of its divisors is an integer number (121062055).

Almost surely, 2^242124109 is an apocalyptic number.

It is an amenable number.

242124109 is a deficient number, since it is larger than the sum of its proper divisors (1).

242124109 is an equidigital number, since it uses as much as digits as its factorization.

242124109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 242124109 is about 15560.3376891377. The cubic root of 242124109 is about 623.2744801943.

The spelling of 242124109 in words is "two hundred forty-two million, one hundred twenty-four thousand, one hundred nine".