243142102999 has 4 divisors (see below), whose sum is σ = 257444579664. Its totient is φ = 228839626336.

The previous prime is 243142102943. The next prime is 243142103003. The reversal of 243142102999 is 999201241342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243142102999 - 2³³ = 234552168407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243142102939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7151238307 + ... + 7151238340.

It is an arithmetic number, because the mean of its divisors is an integer number (64361144916).

Almost surely, 2^243142102999 is an apocalyptic number.

243142102999 is a deficient number, since it is larger than the sum of its proper divisors (14302476665).

243142102999 is a wasteful number, since it uses less digits than its factorization.

243142102999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14302476664.

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 243142102999 in words is "two hundred forty-three billion, one hundred forty-two million, one hundred two thousand, nine hundred ninety-nine".