43240123301 has 8 divisors (see below), whose sum is σ = 43314024600. Its totient is φ = 43166269440.

The previous prime is 43240123261. The next prime is 43240123321. The reversal of 43240123301 is 10332104234.

It can be written as a sum of positive squares in 4 ways, for example, as 9237132100 + 34002991201 = 96110^2 + 184399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43240123301 is a prime.

It is a super-3 number, since 3×43240123301³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43240123321) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2134661 + ... + 2154821.

It is an arithmetic number, because the mean of its divisors is an integer number (5414253075).

Almost surely, 2^43240123301 is an apocalyptic number.

It is an amenable number.

43240123301 is a deficient number, since it is larger than the sum of its proper divisors (73901299).

43240123301 is a wasteful number, since it uses less digits than its factorization.

43240123301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23719.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 43240123301 its reverse (10332104234), we get a palindrome (53572227535).

The spelling of 43240123301 in words is "forty-three billion, two hundred forty million, one hundred twenty-three thousand, three hundred one".