243454 has 4 divisors (see below), whose sum is σ = 365184. Its totient is φ = 121726.

The previous prime is 243437. The next prime is 243461. The reversal of 243454 is 454342.

It is a happy number.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60862 + ... + 60865.

It is an arithmetic number, because the mean of its divisors is an integer number (91296).

2²⁴³⁴⁵⁴ is an apocalyptic number.

243454 is a deficient number, since it is larger than the sum of its proper divisors (121730).

243454 is a wasteful number, since it uses less digits than its factorization.

243454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121729.

The product of its digits is 1920, while the sum is 22.

The square root of 243454 is about 493.4105795380. The cubic root of 243454 is about 62.4413529857.

Adding to 243454 its reverse (454342), we get a palindrome (697796).

The spelling of 243454 in words is "two hundred forty-three thousand, four hundred fifty-four".