121502240 has 96 divisors (see below), whose sum is σ = 298105920. Its totient is φ = 46771200.

The previous prime is 121502239. The next prime is 121502243. The reversal of 121502240 is 42205121.

It is not an unprimeable number, because it can be changed into a prime (121502243) 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, 575735 + ... + 575945.

It is an arithmetic number, because the mean of its divisors is an integer number (3105270).

Almost surely, 2^121502240 is an apocalyptic number.

121502240 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 121502240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149052960).

121502240 is an abundant number, since it is smaller than the sum of its proper divisors (176603680).

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

121502240 is a wasteful number, since it uses less digits than its factorization.

121502240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 121502240 is about 11022.8054505194. The cubic root of 121502240 is about 495.2921310674.

Adding to 121502240 its reverse (42205121), we get a palindrome (163707361).

The spelling of 121502240 in words is "one hundred twenty-one million, five hundred two thousand, two hundred forty".