243158 has 4 divisors (see below), whose sum is σ = 364740. Its totient is φ = 121578.

The previous prime is 243157. The next prime is 243161. The reversal of 243158 is 851342.

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

It is a nialpdrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 243158.

It is not an unprimeable number, because it can be changed into a prime (243157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60788 + ... + 60791.

It is an arithmetic number, because the mean of its divisors is an integer number (91185).

2²⁴³¹⁵⁸ is an apocalyptic number.

243158 is a deficient number, since it is larger than the sum of its proper divisors (121582).

243158 is a wasteful number, since it uses less digits than its factorization.

243158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121581.

The product of its digits is 960, while the sum is 23.

The square root of 243158 is about 493.1105352758. The cubic root of 243158 is about 62.4160365862.

The spelling of 243158 in words is "two hundred forty-three thousand, one hundred fifty-eight".