121541480 has 64 divisors (see below), whose sum is σ = 289310400. Its totient is φ = 45953856.

The previous prime is 121541471. The next prime is 121541489. The reversal of 121541480 is 84145121.

It is an interprime number because it is at equal distance from previous prime (121541471) and next prime (121541489).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121541489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274139 + ... + 274581.

It is an arithmetic number, because the mean of its divisors is an integer number (4520475).

Almost surely, 2^121541480 is an apocalyptic number.

121541480 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 121541480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144655200).

121541480 is an abundant number, since it is smaller than the sum of its proper divisors (167768920).

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

121541480 is an equidigital number, since it uses as much as digits as its factorization.

121541480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 121541480 is about 11024.5852529698. The cubic root of 121541480 is about 495.3454446835.

The spelling of 121541480 in words is "one hundred twenty-one million, five hundred forty-one thousand, four hundred eighty".