243954 has 12 divisors (see below), whose sum is σ = 528606. Its totient is φ = 81312.

The previous prime is 243953. The next prime is 243973. The reversal of 243954 is 459342.

It can be written as a sum of positive squares in only one way, i.e., 178929 + 65025 = 423^2 + 255^2 .

It is not an unprimeable number, because it can be changed into a prime (243953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6759 + ... + 6794.

2²⁴³⁹⁵⁴ is an apocalyptic number.

243954 is an abundant number, since it is smaller than the sum of its proper divisors (284652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243954 is a wasteful number, since it uses less digits than its factorization.

243954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13561 (or 13558 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 243954 is about 493.9169970754. The cubic root of 243954 is about 62.4840706071.

It can be divided in two parts, 2 and 43954, that added together give a triangular number (43956 = T₂₉₆).

The spelling of 243954 in words is "two hundred forty-three thousand, nine hundred fifty-four".