243124004420 has 48 divisors (see below), whose sum is σ = 574941943296. Its totient is φ = 85556832000.

The previous prime is 243124004419. The next prime is 243124004441. The reversal of 243124004420 is 24400421342.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 243124004420.

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, 17817521 + ... + 17831160.

It is an arithmetic number, because the mean of its divisors is an integer number (11977957152).

Almost surely, 2^243124004420 is an apocalyptic number.

243124004420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243124004420 is an abundant number, since it is smaller than the sum of its proper divisors (331817938876).

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

243124004420 is a wasteful number, since it uses less digits than its factorization.

243124004420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35648732 (or 35648730 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 243124004420 its reverse (24400421342), we get a palindrome (267524425762).

The spelling of 243124004420 in words is "two hundred forty-three billion, one hundred twenty-four million, four thousand, four hundred twenty".