243432242540 has 48 divisors (see below), whose sum is σ = 538813658880. Its totient is φ = 92241327360.

The previous prime is 243432242467. The next prime is 243432242591. The reversal of 243432242540 is 45242234342.

It is a self number, because there is not a number n which added to its sum of digits gives 243432242540.

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, 3928796 + ... + 3990275.

It is an arithmetic number, because the mean of its divisors is an integer number (11225284560).

Almost surely, 2^243432242540 is an apocalyptic number.

243432242540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243432242540 is an abundant number, since it is smaller than the sum of its proper divisors (295381416340).

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

243432242540 is a wasteful number, since it uses less digits than its factorization.

243432242540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7919162 (or 7919160 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 35.

Adding to 243432242540 its reverse (45242234342), we get a palindrome (288674476882).

The spelling of 243432242540 in words is "two hundred forty-three billion, four hundred thirty-two million, two hundred forty-two thousand, five hundred forty".