121503480 has 256 divisors, whose sum is σ = 458956800. Its totient is φ = 25090560.

The previous prime is 121503443. The next prime is 121503497. The reversal of 121503480 is 84305121.

It is a super-2 number, since 2×121503480² = 29526191304220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 121503480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 366915 + ... + 367245.

It is an arithmetic number, because the mean of its divisors is an integer number (1792800).

Almost surely, 2^121503480 is an apocalyptic number.

121503480 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 121503480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229478400).

121503480 is an abundant number, since it is smaller than the sum of its proper divisors (337453320).

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

121503480 is a wasteful number, since it uses less digits than its factorization.

121503480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 121503480 is about 11022.8616973996. The cubic root of 121503480 is about 495.2938159750.

The spelling of 121503480 in words is "one hundred twenty-one million, five hundred three thousand, four hundred eighty".