121775080 has 64 divisors (see below), whose sum is σ = 331568640. Its totient is φ = 39293952.

The previous prime is 121775077. The next prime is 121775107. The reversal of 121775080 is 80577121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8032 + ... + 17551.

It is an arithmetic number, because the mean of its divisors is an integer number (5180760).

Almost surely, 2^121775080 is an apocalyptic number.

121775080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121775080 is an abundant number, since it is smaller than the sum of its proper divisors (209793560).

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

121775080 is a wasteful number, since it uses less digits than its factorization.

121775080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25618 (or 25614 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 121775080 is about 11035.1746701174. The cubic root of 121775080 is about 495.6625892022.

The spelling of 121775080 in words is "one hundred twenty-one million, seven hundred seventy-five thousand, eighty".