243875 has 8 divisors (see below), whose sum is σ = 304512. Its totient is φ = 195000.

The previous prime is 243871. The next prime is 243889. The reversal of 243875 is 578342.

It is a happy number.

It is not a de Polignac number, because 243875 - 2² = 243871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 851 + ... + 1100.

It is an arithmetic number, because the mean of its divisors is an integer number (38064).

2²⁴³⁸⁷⁵ is an apocalyptic number.

243875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

243875 is a deficient number, since it is larger than the sum of its proper divisors (60637).

243875 is an equidigital number, since it uses as much as digits as its factorization.

243875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966 (or 1956 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 243875 is about 493.8370176485. The cubic root of 243875 is about 62.4773251079.

The spelling of 243875 in words is "two hundred forty-three thousand, eight hundred seventy-five".