242192917 has 2 divisors, whose sum is σ = 242192918. Its totient is φ = 242192916.

The previous prime is 242192887. The next prime is 242192953. The reversal of 242192917 is 719291242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217680516 + 24512401 = 14754^2 + 4951^2 .

It is a cyclic number.

It is not a de Polignac number, because 242192917 - 2⁷ = 242192789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242192957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121096458 + 121096459.

It is an arithmetic number, because the mean of its divisors is an integer number (121096459).

Almost surely, 2^242192917 is an apocalyptic number.

It is an amenable number.

242192917 is a deficient number, since it is larger than the sum of its proper divisors (1).

242192917 is an equidigital number, since it uses as much as digits as its factorization.

242192917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 242192917 is about 15562.5485380769. The cubic root of 242192917 is about 623.3335163208. Note that the first 3 decimals are identical.

The spelling of 242192917 in words is "two hundred forty-two million, one hundred ninety-two thousand, nine hundred seventeen".