121983480 has 96 divisors (see below), whose sum is σ = 399016800. Its totient is φ = 32318208.

The previous prime is 121983479. The next prime is 121983493. The reversal of 121983480 is 84389121.

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59106 + ... + 61134.

It is an arithmetic number, because the mean of its divisors is an integer number (4156425).

Almost surely, 2^121983480 is an apocalyptic number.

121983480 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 121983480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199508400).

121983480 is an abundant number, since it is smaller than the sum of its proper divisors (277033320).

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

121983480 is a wasteful number, since it uses less digits than its factorization.

121983480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213 (or 2206 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 121983480 is about 11044.6131666075. The cubic root of 121983480 is about 495.9451790781.

The spelling of 121983480 in words is "one hundred twenty-one million, nine hundred eighty-three thousand, four hundred eighty".