43234044121 has 6 divisors (see below), whose sum is σ = 44314253966. Its totient is φ = 42179553600.

The previous prime is 43234044079. The next prime is 43234044149. The reversal of 43234044121 is 12144043234.

It can be written as a sum of positive squares in 3 ways, for example, as 7558389721 + 35675654400 = 86939^2 + 188880^2 .

It is not a de Polignac number, because 43234044121 - 2¹⁷ = 43233913049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43234044121.

It is not an unprimeable number, because it can be changed into a prime (43234044181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12857940 + ... + 12861301.

Almost surely, 2^43234044121 is an apocalyptic number.

43234044121 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

43234044121 is a deficient number, since it is larger than the sum of its proper divisors (1080209845).

43234044121 is an equidigital number, since it uses as much as digits as its factorization.

43234044121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25719323 (or 25719282 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 43234044121 its reverse (12144043234), we get a palindrome (55378087355).

The spelling of 43234044121 in words is "forty-three billion, two hundred thirty-four million, forty-four thousand, one hundred twenty-one".