243104042440 has 64 divisors (see below), whose sum is σ = 633037708800. Its totient is φ = 82294887168.

The previous prime is 243104042407. The next prime is 243104042459. The reversal of 243104042440 is 44240401342.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 243104042399 and 243104042408.

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, 5472999 + ... + 5517238.

It is an arithmetic number, because the mean of its divisors is an integer number (9891214200).

Almost surely, 2^243104042440 is an apocalyptic number.

243104042440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243104042440 is an abundant number, since it is smaller than the sum of its proper divisors (389933666360).

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

243104042440 is a wasteful number, since it uses less digits than its factorization.

243104042440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10990334 (or 10990330 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 243104042440 its reverse (44240401342), we get a palindrome (287344443782).

The spelling of 243104042440 in words is "two hundred forty-three billion, one hundred four million, forty-two thousand, four hundred forty".