243042131042 has 4 divisors (see below), whose sum is σ = 364563196566. Its totient is φ = 121521065520.

The previous prime is 243042131011. The next prime is 243042131063. The reversal of 243042131042 is 240131240342.

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

It can be written as a sum of positive squares in only one way, i.e., 242033496961 + 1008634081 = 491969^2 + 31759^2 .

It is a super-2 number, since 2×243042131042² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60760532759 + ... + 60760532762.

Almost surely, 2^243042131042 is an apocalyptic number.

243042131042 is a deficient number, since it is larger than the sum of its proper divisors (121521065524).

243042131042 is a wasteful number, since it uses less digits than its factorization.

243042131042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121521065523.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 243042131042 its reverse (240131240342), we get a palindrome (483173371384).

The spelling of 243042131042 in words is "two hundred forty-three billion, forty-two million, one hundred thirty-one thousand, forty-two".