243120102030340 has 24 divisors (see below), whose sum is σ = 517546080215640. Its totient is φ = 95915875868928.

The previous prime is 243120102030257. The next prime is 243120102030349. The reversal of 243120102030340 is 43030201021342.

It can be written as a sum of positive squares in 4 ways, for example, as 42792085732356 + 200328016297984 = 6541566^2 + 14153728^2 .

It is a super-2 number, since 2×243120102030340² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243120102030349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83260307455 + ... + 83260310374.

It is an arithmetic number, because the mean of its divisors is an integer number (21564420008985).

Almost surely, 2^{243120102030340} is an apocalyptic number.

243120102030340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243120102030340 is an abundant number, since it is smaller than the sum of its proper divisors (274425978185300).

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

243120102030340 is a wasteful number, since it uses less digits than its factorization.

243120102030340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166520617911 (or 166520617909 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 243120102030340 its reverse (43030201021342), we get a palindrome (286150303051682).

The spelling of 243120102030340 in words is "two hundred forty-three trillion, one hundred twenty billion, one hundred two million, thirty thousand, three hundred forty".