243240041220 has 96 divisors (see below), whose sum is σ = 757006508160. Its totient is φ = 57854684160.

The previous prime is 243240041159. The next prime is 243240041221. The reversal of 243240041220 is 22140042342.

It is not an unprimeable number, because it can be changed into a prime (243240041221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3441865 + ... + 3511824.

It is an arithmetic number, because the mean of its divisors is an integer number (7885484460).

Almost surely, 2^243240041220 is an apocalyptic number.

243240041220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243240041220 is an abundant number, since it is smaller than the sum of its proper divisors (513766466940).

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

243240041220 is a wasteful number, since it uses less digits than its factorization.

243240041220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6953765 (or 6953763 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 243240041220 its reverse (22140042342), we get a palindrome (265380083562).

The spelling of 243240041220 in words is "two hundred forty-three billion, two hundred forty million, forty-one thousand, two hundred twenty".