243542242245343 has 4 divisors (see below), whose sum is σ = 251398443608128. Its totient is φ = 235686040882560.

The previous prime is 243542242245301. The next prime is 243542242245353. The reversal of 243542242245343 is 343542242245342.

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

It is a cyclic number.

It is not a de Polignac number, because 243542242245343 - 2²¹ = 243542240148191 is a prime.

It is a super-3 number, since 3×243542242245343³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243542242245353) 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, 3928100681346 + ... + 3928100681407.

It is an arithmetic number, because the mean of its divisors is an integer number (62849610902032).

Almost surely, 2^{243542242245343} is an apocalyptic number.

243542242245343 is a deficient number, since it is larger than the sum of its proper divisors (7856201362785).

243542242245343 is an equidigital number, since it uses as much as digits as its factorization.

243542242245343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7856201362784.

The product of its digits is 22118400, while the sum is 49.

Subtracting 243542242245343 from its reverse (343542242245342), we obtain a palindrome (99999999999999).

The spelling of 243542242245343 in words is "two hundred forty-three trillion, five hundred forty-two billion, two hundred forty-two million, two hundred forty-five thousand, three hundred forty-three".