121854730042 has 16 divisors (see below), whose sum is σ = 183589272360. Its totient is φ = 60658371072.

The previous prime is 121854730037. The next prime is 121854730051. The reversal of 121854730042 is 240037458121.

It can be written as a sum of positive squares in 4 ways, for example, as 105040161801 + 16814568241 = 324099^2 + 129671^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121854729983 and 121854730010.

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 7 ways as a sum of consecutive naturals, for example, 7480018 + ... + 7496290.

Almost surely, 2^121854730042 is an apocalyptic number.

121854730042 is a deficient number, since it is larger than the sum of its proper divisors (61734542318).

121854730042 is a wasteful number, since it uses less digits than its factorization.

121854730042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32577.

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 121854730042 in words is "one hundred twenty-one billion, eight hundred fifty-four million, seven hundred thirty thousand, forty-two".