243124022540 has 96 divisors (see below), whose sum is σ = 590689024128. Its totient is φ = 82333440000.

The previous prime is 243124022467. The next prime is 243124022579. The reversal of 243124022540 is 45220421342.

It is an unprimeable number.

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, 5932520 + ... + 5973360.

It is an arithmetic number, because the mean of its divisors is an integer number (6153010668).

Almost surely, 2^243124022540 is an apocalyptic number.

243124022540 is a gapful number since it is divisible by the number (20) 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 243124022540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295344512064).

243124022540 is an abundant number, since it is smaller than the sum of its proper divisors (347565001588).

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

243124022540 is a wasteful number, since it uses less digits than its factorization.

243124022540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41379 (or 41377 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 243124022540 its reverse (45220421342), we get a palindrome (288344443882).

The spelling of 243124022540 in words is "two hundred forty-three billion, one hundred twenty-four million, twenty-two thousand, five hundred forty".