243201132342 has 128 divisors (see below), whose sum is σ = 625766400000. Its totient is φ = 68579094528.

The previous prime is 243201132323. The next prime is 243201132367. The reversal of 243201132342 is 243231102342.

243201132342 is a `hidden beast` number, since 2 + 4 + 320 + 11 + 323 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9252034 + ... + 9278282.

It is an arithmetic number, because the mean of its divisors is an integer number (4888800000).

Almost surely, 2^243201132342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243201132342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312883200000).

243201132342 is an abundant number, since it is smaller than the sum of its proper divisors (382565267658).

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

243201132342 is a wasteful number, since it uses less digits than its factorization.

243201132342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26587 (or 26581 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 243201132342 its reverse (243231102342), we get a palindrome (486432234684).

The spelling of 243201132342 in words is "two hundred forty-three billion, two hundred one million, one hundred thirty-two thousand, three hundred forty-two".