121796154042 has 16 divisors (see below), whose sum is σ = 243728490720. Its totient is φ = 40576020912.

The previous prime is 121796154001. The next prime is 121796154059. The reversal of 121796154042 is 240451697121.

It is a junction number, because it is equal to n+sod(n) for n = 121796153985 and 121796154003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5662648 + ... + 5684115.

It is an arithmetic number, because the mean of its divisors is an integer number (15233030670).

Almost surely, 2^121796154042 is an apocalyptic number.

121796154042 is an abundant number, since it is smaller than the sum of its proper divisors (121932336678).

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

121796154042 is a wasteful number, since it uses less digits than its factorization.

121796154042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11348557.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 121796154042 in words is "one hundred twenty-one billion, seven hundred ninety-six million, one hundred fifty-four thousand, forty-two".