242439187 has 2 divisors, whose sum is σ = 242439188. Its totient is φ = 242439186.

The previous prime is 242439179. The next prime is 242439199. The reversal of 242439187 is 781934242.

242439187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242439187 - 2³ = 242439179 is a prime.

It is not a weakly prime, because it can be changed into another prime (242439137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121219593 + 121219594.

It is an arithmetic number, because the mean of its divisors is an integer number (121219594).

Almost surely, 2^242439187 is an apocalyptic number.

242439187 is a deficient number, since it is larger than the sum of its proper divisors (1).

242439187 is an equidigital number, since it uses as much as digits as its factorization.

242439187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 40.

The square root of 242439187 is about 15570.4587922129. The cubic root of 242439187 is about 623.5447203277.

The spelling of 242439187 in words is "two hundred forty-two million, four hundred thirty-nine thousand, one hundred eighty-seven".