121033240 has 64 divisors (see below), whose sum is σ = 284731200. Its totient is φ = 46244352.

The previous prime is 121033201. The next prime is 121033243. The reversal of 121033240 is 42330121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121033243) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 118974 + ... + 119986.

It is an arithmetic number, because the mean of its divisors is an integer number (4448925).

Almost surely, 2^121033240 is an apocalyptic number.

121033240 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 121033240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142365600).

121033240 is an abundant number, since it is smaller than the sum of its proper divisors (163697960).

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

121033240 is a wasteful number, since it uses less digits than its factorization.

121033240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 121033240 is about 11001.5108053394. The cubic root of 121033240 is about 494.6540316235.

Adding to 121033240 its reverse (42330121), we get a palindrome (163363361).

The spelling of 121033240 in words is "one hundred twenty-one million, thirty-three thousand, two hundred forty".