243140858 has 8 divisors (see below), whose sum is σ = 364955328. Its totient is φ = 121489084.

The previous prime is 243140837. The next prime is 243140861. The reversal of 243140858 is 858041342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36866 + ... + 42957.

It is an arithmetic number, because the mean of its divisors is an integer number (45619416).

Almost surely, 2^243140858 is an apocalyptic number.

243140858 is a deficient number, since it is larger than the sum of its proper divisors (121814470).

243140858 is a wasteful number, since it uses less digits than its factorization.

243140858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81348.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 243140858 is about 15592.9746360340. The cubic root of 243140858 is about 624.1456982951.

The spelling of 243140858 in words is "two hundred forty-three million, one hundred forty thousand, eight hundred fifty-eight".