242825939 has 2 divisors, whose sum is σ = 242825940. Its totient is φ = 242825938.

The previous prime is 242825873. The next prime is 242825941. The reversal of 242825939 is 939528242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242825939 - 2¹⁶ = 242760403 is a prime.

Together with 242825941, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242825939.

It is not a weakly prime, because it can be changed into another prime (242825039) 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, 121412969 + 121412970.

It is an arithmetic number, because the mean of its divisors is an integer number (121412970).

Almost surely, 2^242825939 is an apocalyptic number.

242825939 is a deficient number, since it is larger than the sum of its proper divisors (1).

242825939 is an equidigital number, since it uses as much as digits as its factorization.

242825939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 44.

The square root of 242825939 is about 15582.8732588056. The cubic root of 242825939 is about 623.8761148361.

The spelling of 242825939 in words is "two hundred forty-two million, eight hundred twenty-five thousand, nine hundred thirty-nine".