243042195 has 32 divisors (see below), whose sum is σ = 427311360. Its totient is φ = 116979840.

The previous prime is 243042187. The next prime is 243042203. The reversal of 243042195 is 591240342.

It is an interprime number because it is at equal distance from previous prime (243042187) and next prime (243042203).

It is not a de Polignac number, because 243042195 - 2³ = 243042187 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17637 + ... + 28233.

It is an arithmetic number, because the mean of its divisors is an integer number (13353480).

Almost surely, 2^243042195 is an apocalyptic number.

243042195 is a deficient number, since it is larger than the sum of its proper divisors (184269165).

243042195 is a wasteful number, since it uses less digits than its factorization.

243042195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10755.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 243042195 is about 15589.8106146290. The cubic root of 243042195 is about 624.0612638116.

The spelling of 243042195 in words is "two hundred forty-three million, forty-two thousand, one hundred ninety-five".