242134187 has 2 divisors, whose sum is σ = 242134188. Its totient is φ = 242134186.

The previous prime is 242134183. The next prime is 242134223. The reversal of 242134187 is 781431242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242134187 - 2² = 242134183 is a prime.

It is not a weakly prime, because it can be changed into another prime (242134183) 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, 121067093 + 121067094.

It is an arithmetic number, because the mean of its divisors is an integer number (121067094).

Almost surely, 2^242134187 is an apocalyptic number.

242134187 is a deficient number, since it is larger than the sum of its proper divisors (1).

242134187 is an equidigital number, since it uses as much as digits as its factorization.

242134187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 32.

The square root of 242134187 is about 15560.6615219277. The cubic root of 242134187 is about 623.2831276508.

The spelling of 242134187 in words is "two hundred forty-two million, one hundred thirty-four thousand, one hundred eighty-seven".