121300240 has 40 divisors (see below), whose sum is σ = 284267520. Its totient is φ = 48134016.

The previous prime is 121300159. The next prime is 121300261. The reversal of 121300240 is 42003121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 121300240.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4191 + ... + 16129.

It is an arithmetic number, because the mean of its divisors is an integer number (7106688).

Almost surely, 2^121300240 is an apocalyptic number.

121300240 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 121300240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142133760).

121300240 is an abundant number, since it is smaller than the sum of its proper divisors (162967280).

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

121300240 is a wasteful number, since it uses less digits than its factorization.

121300240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12079 (or 12073 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 121300240 is about 11013.6388173936. The cubic root of 121300240 is about 495.0175009967.

Adding to 121300240 its reverse (42003121), we get a palindrome (163303361).

The spelling of 121300240 in words is "one hundred twenty-one million, three hundred thousand, two hundred forty".