243420540524 has 24 divisors (see below), whose sum is σ = 512464296960. Its totient is φ = 98832399696.

The previous prime is 243420540497. The next prime is 243420540577. The reversal of 243420540524 is 425045024342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228778172 + ... + 228779235.

It is an arithmetic number, because the mean of its divisors is an integer number (21352679040).

Almost surely, 2^243420540524 is an apocalyptic number.

It is an amenable number.

243420540524 is an abundant number, since it is smaller than the sum of its proper divisors (269043756436).

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

243420540524 is a wasteful number, since it uses less digits than its factorization.

243420540524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457557437 (or 457557435 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 35.

Adding to 243420540524 its reverse (425045024342), we get a palindrome (668465564866).

The spelling of 243420540524 in words is "two hundred forty-three billion, four hundred twenty million, five hundred forty thousand, five hundred twenty-four".