243434 has 8 divisors (see below), whose sum is σ = 371520. Its totient is φ = 119596.

The previous prime is 243433. The next prime is 243437. The reversal of 243434 is 434342.

It is a happy number.

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

It is a super-2 number, since 2×243434² = 118520224712, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2 + 4 + 4² + 3⁶ + 3¹¹ + 4⁸ .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914 + ... + 1149.

It is an arithmetic number, because the mean of its divisors is an integer number (46440).

2²⁴³⁴³⁴ is an apocalyptic number.

243434 is a deficient number, since it is larger than the sum of its proper divisors (128086).

243434 is a wasteful number, since it uses less digits than its factorization.

243434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124.

The product of its digits is 1152, while the sum is 20.

The square root of 243434 is about 493.3903120249. The cubic root of 243434 is about 62.4396430647.

Adding to 243434 its reverse (434342), we get a palindrome (677776).

It can be divided in two parts, 2 and 43434, that multiplied together give a palindrome (86868).

The spelling of 243434 in words is "two hundred forty-three thousand, four hundred thirty-four".