243724070420 has 12 divisors (see below), whose sum is σ = 511820547924. Its totient is φ = 97489628160.

The previous prime is 243724070419. The next prime is 243724070437. The reversal of 243724070420 is 24070427342.

It is a happy number.

243724070420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 70856051344 + 172868019076 = 266188^2 + 415774^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6093101741 + ... + 6093101780.

It is an arithmetic number, because the mean of its divisors is an integer number (42651712327).

Almost surely, 2^243724070420 is an apocalyptic number.

243724070420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243724070420 is an abundant number, since it is smaller than the sum of its proper divisors (268096477504).

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

243724070420 is a wasteful number, since it uses less digits than its factorization.

243724070420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12186203530 (or 12186203528 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 35.

Adding to 243724070420 its reverse (24070427342), we get a palindrome (267794497762).

The spelling of 243724070420 in words is "two hundred forty-three billion, seven hundred twenty-four million, seventy thousand, four hundred twenty".