243134540242 has 8 divisors (see below), whose sum is σ = 397856520432. Its totient is φ = 110515700100.

The previous prime is 243134540221. The next prime is 243134540279. The reversal of 243134540242 is 242045431342.

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

It is a super-2 number, since 2×243134540242² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243134540198 and 243134540207.

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, 5525784984 + ... + 5525785027.

It is an arithmetic number, because the mean of its divisors is an integer number (49732065054).

Almost surely, 2^243134540242 is an apocalyptic number.

243134540242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243134540242 is a deficient number, since it is larger than the sum of its proper divisors (154721980190).

243134540242 is a wasteful number, since it uses less digits than its factorization.

243134540242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11051570024.

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 243134540242 its reverse (242045431342), we get a palindrome (485179971584).

The spelling of 243134540242 in words is "two hundred forty-three billion, one hundred thirty-four million, five hundred forty thousand, two hundred forty-two".