243012159 has 12 divisors (see below), whose sum is σ = 378019096. Its totient is φ = 149545872.

The previous prime is 243012113. The next prime is 243012163. The reversal of 243012159 is 951210342.

It is not a de Polignac number, because 243012159 - 2⁷ = 243012031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243012359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1038397 + ... + 1038630.

Almost surely, 2^243012159 is an apocalyptic number.

243012159 is a deficient number, since it is larger than the sum of its proper divisors (135006937).

243012159 is a wasteful number, since it uses less digits than its factorization.

243012159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077046 (or 2077043 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 243012159 is about 15588.8472633482. The cubic root of 243012159 is about 624.0355548651.

The spelling of 243012159 in words is "two hundred forty-three million, twelve thousand, one hundred fifty-nine".