243143421042 has 64 divisors (see below), whose sum is σ = 511641360000. Its totient is φ = 76919162880.

The previous prime is 243143420999. The next prime is 243143421049. The reversal of 243143421042 is 240124341342.

243143421042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (243143421049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18005209 + ... + 18018707.

It is an arithmetic number, because the mean of its divisors is an integer number (7994396250).

Almost surely, 2^243143421042 is an apocalyptic number.

243143421042 is an abundant number, since it is smaller than the sum of its proper divisors (268497938958).

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

243143421042 is a wasteful number, since it uses less digits than its factorization.

243143421042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15291.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 243143421042 its reverse (240124341342), we get a palindrome (483267762384).

The spelling of 243143421042 in words is "two hundred forty-three billion, one hundred forty-three million, four hundred twenty-one thousand, forty-two".