121982760 has 80 divisors (see below), whose sum is σ = 410008500. Its totient is φ = 32527872.

The previous prime is 121982753. The next prime is 121982761. The reversal of 121982760 is 67289121.

It can be written as a sum of positive squares in 2 ways, for example, as 116251524 + 5731236 = 10782^2 + 2394^2 .

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

It is not an unprimeable number, because it can be changed into a prime (121982761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15585 + ... + 22064.

Almost surely, 2^121982760 is an apocalyptic number.

121982760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121982760 is an abundant number, since it is smaller than the sum of its proper divisors (288025740).

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

121982760 is a wasteful number, since it uses less digits than its factorization.

121982760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37672 (or 37659 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 121982760 is about 11044.5805714839. The cubic root of 121982760 is about 495.9442033142.

The spelling of 121982760 in words is "one hundred twenty-one million, nine hundred eighty-two thousand, seven hundred sixty".