243042 has 8 divisors (see below), whose sum is σ = 486096. Its totient is φ = 81012.

The previous prime is 243031. The next prime is 243073. The reversal of 243042 is 240342.

It is a happy number.

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

243042 is an admirable number.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20248 + ... + 20259.

It is an arithmetic number, because the mean of its divisors is an integer number (60762).

2²⁴³⁰⁴² is an apocalyptic number.

243042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

243042 is a wasteful number, since it uses less digits than its factorization.

243042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40512.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 243042 is about 492.9929005574. The cubic root of 243042 is about 62.4061096911.

Adding to 243042 its reverse (240342), we get a palindrome (483384).

The spelling of 243042 in words is "two hundred forty-three thousand, forty-two", and thus it is an iban number.