121441240 has 64 divisors (see below), whose sum is σ = 282035520. Its totient is φ = 47040000.

The previous prime is 121441237. The next prime is 121441259. The reversal of 121441240 is 42144121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172890 + ... + 173590.

It is an arithmetic number, because the mean of its divisors is an integer number (4406805).

Almost surely, 2^121441240 is an apocalyptic number.

121441240 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 121441240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141017760).

121441240 is an abundant number, since it is smaller than the sum of its proper divisors (160594280).

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

121441240 is a wasteful number, since it uses less digits than its factorization.

121441240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 121441240 is about 11020.0381124568. The cubic root of 121441240 is about 495.2092303255.

Adding to 121441240 its reverse (42144121), we get a palindrome (163585361).

The spelling of 121441240 in words is "one hundred twenty-one million, four hundred forty-one thousand, two hundred forty".