121242454679 has 8 divisors (see below), whose sum is σ = 126519332832. Its totient is φ = 115966032160.

The previous prime is 121242454657. The next prime is 121242454693. The reversal of 121242454679 is 976454242121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121242454679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121242454609) 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 7 ways as a sum of consecutive naturals, for example, 500417 + ... + 702069.

It is an arithmetic number, because the mean of its divisors is an integer number (15814916604).

Almost surely, 2^121242454679 is an apocalyptic number.

121242454679 is a deficient number, since it is larger than the sum of its proper divisors (5276878153).

121242454679 is a wasteful number, since it uses less digits than its factorization.

121242454679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227817.

The product of its digits is 967680, while the sum is 47.

The spelling of 121242454679 in words is "one hundred twenty-one billion, two hundred forty-two million, four hundred fifty-four thousand, six hundred seventy-nine".