121282560 has 336 divisors, whose sum is σ = 490703616. Its totient is φ = 27131904.

The previous prime is 121282549. The next prime is 121282597. The reversal of 121282560 is 65282121.

It is a happy number.

121282560 is a `hidden beast` number, since 1 + 21 + 2 + 82 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2580457 + ... + 2580503.

Almost surely, 2^121282560 is an apocalyptic number.

121282560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121282560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245351808).

121282560 is an abundant number, since it is smaller than the sum of its proper divisors (369421056).

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

121282560 is an equidigital number, since it uses as much as digits as its factorization.

121282560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 121282560 is about 11012.8361469696. The cubic root of 121282560 is about 494.9934495613.

The spelling of 121282560 in words is "one hundred twenty-one million, two hundred eighty-two thousand, five hundred sixty".