121260455424 has 120 divisors (see below), whose sum is σ = 351991122912. Its totient is φ = 40186245120.

The previous prime is 121260455401. The next prime is 121260455447. The reversal of 121260455424 is 424554062121.

121260455424 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 604 + 5 + 5 + 42 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (121260455401) and next prime (121260455447).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 721129 + ... + 873239.

Almost surely, 2^121260455424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121260455424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175995561456).

121260455424 is an abundant number, since it is smaller than the sum of its proper divisors (230730667488).

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

121260455424 is a wasteful number, since it uses less digits than its factorization.

121260455424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152308 (or 152289 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

It can be divided in two parts, 1212604 and 55424, that added together give a triangular number (1268028 = T₁₅₉₂).

The spelling of 121260455424 in words is "one hundred twenty-one billion, two hundred sixty million, four hundred fifty-five thousand, four hundred twenty-four".