243042042122 has 32 divisors (see below), whose sum is σ = 403872557760. Its totient is φ = 108762382080.

The previous prime is 243042042091. The next prime is 243042042127. The reversal of 243042042122 is 221240240342.

It is a junction number, because it is equal to n+sod(n) for n = 243042042091 and 243042042100.

It is not an unprimeable number, because it can be changed into a prime (243042042127) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 2572904 + ... + 2665692.

It is an arithmetic number, because the mean of its divisors is an integer number (12621017430).

Almost surely, 2^243042042122 is an apocalyptic number.

243042042122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243042042122 is a deficient number, since it is larger than the sum of its proper divisors (160830515638).

243042042122 is a wasteful number, since it uses less digits than its factorization.

243042042122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94646.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 243042042122 its reverse (221240240342), we get a palindrome (464282282464).

The spelling of 243042042122 in words is "two hundred forty-three billion, forty-two million, forty-two thousand, one hundred twenty-two".