243542354135 has 8 divisors (see below), whose sum is σ = 292340574576. Its totient is φ = 194774050240.

The previous prime is 243542354131. The next prime is 243542354147. The reversal of 243542354135 is 531453245342.

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

It is not a de Polignac number, because 243542354135 - 2² = 243542354131 is a prime.

It is a super-3 number, since 3×243542354135³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243542354092 and 243542354101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243542354131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7461221 + ... + 7493790.

It is an arithmetic number, because the mean of its divisors is an integer number (36542571822).

Almost surely, 2^243542354135 is an apocalyptic number.

243542354135 is a deficient number, since it is larger than the sum of its proper divisors (48798220441).

243542354135 is a wasteful number, since it uses less digits than its factorization.

243542354135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14958273.

The product of its digits is 864000, while the sum is 41.

Adding to 243542354135 its reverse (531453245342), we get a palindrome (774995599477).

The spelling of 243542354135 in words is "two hundred forty-three billion, five hundred forty-two million, three hundred fifty-four thousand, one hundred thirty-five".