243545124140 has 24 divisors (see below), whose sum is σ = 520113318480. Its totient is φ = 95766895808.

The previous prime is 243545124103. The next prime is 243545124169. The reversal of 243545124140 is 41421545342.

It is a happy number.

It is a super-3 number, since 3×243545124140³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243545124140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103195907 + ... + 103198266.

It is an arithmetic number, because the mean of its divisors is an integer number (21671388270).

Almost surely, 2^243545124140 is an apocalyptic number.

243545124140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243545124140 is an abundant number, since it is smaller than the sum of its proper divisors (276568194340).

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

243545124140 is a wasteful number, since it uses less digits than its factorization.

243545124140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206394241 (or 206394239 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 243545124140 its reverse (41421545342), we get a palindrome (284966669482).

The spelling of 243545124140 in words is "two hundred forty-three billion, five hundred forty-five million, one hundred twenty-four thousand, one hundred forty".