243420323040 has 96 divisors (see below), whose sum is σ = 851971145760. Its totient is φ = 64912084992.

The previous prime is 243420323011. The next prime is 243420323077. The reversal of 243420323040 is 40323024342.

243420323040 is a `hidden beast` number, since 2 + 4 + 3 + 420 + 3 + 230 + 4 + 0 = 666.

243420323040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 243420322995 and 243420323013.

It is a congruent number.

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, 28169329 + ... + 28177968.

It is an arithmetic number, because the mean of its divisors is an integer number (8874699435).

Almost surely, 2^243420323040 is an apocalyptic number.

243420323040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243420323040 is an abundant number, since it is smaller than the sum of its proper divisors (608550822720).

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

243420323040 is a wasteful number, since it uses less digits than its factorization.

243420323040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56347321 (or 56347307 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 243420323040 its reverse (40323024342), we get a palindrome (283743347382).

The spelling of 243420323040 in words is "two hundred forty-three billion, four hundred twenty million, three hundred twenty-three thousand, forty".