242192879 has 2 divisors, whose sum is σ = 242192880. Its totient is φ = 242192878.

The previous prime is 242192851. The next prime is 242192887. The reversal of 242192879 is 978291242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242192879 - 2⁸ = 242192623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242192179) 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, 121096439 + 121096440.

It is an arithmetic number, because the mean of its divisors is an integer number (121096440).

Almost surely, 2^242192879 is an apocalyptic number.

242192879 is a deficient number, since it is larger than the sum of its proper divisors (1).

242192879 is an equidigital number, since it uses as much as digits as its factorization.

242192879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 242192879 is about 15562.5473171971. The cubic root of 242192879 is about 623.3334837205. Note that the first 3 decimals are identical.

The spelling of 242192879 in words is "two hundred forty-two million, one hundred ninety-two thousand, eight hundred seventy-nine".