43130123121 has 8 divisors (see below), whose sum is σ = 57757953280. Its totient is φ = 28627854192.

The previous prime is 43130123119. The next prime is 43130123131. The reversal of 43130123121 is 12132103134.

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

It is not a de Polignac number, because 43130123121 - 2¹ = 43130123119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43130123131) 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, 31389505 + ... + 31390878.

It is an arithmetic number, because the mean of its divisors is an integer number (7219744160).

Almost surely, 2^43130123121 is an apocalyptic number.

It is an amenable number.

43130123121 is a deficient number, since it is larger than the sum of its proper divisors (14627830159).

43130123121 is a wasteful number, since it uses less digits than its factorization.

43130123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62780615.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 43130123121 its reverse (12132103134), we get a palindrome (55262226255).

The spelling of 43130123121 in words is "forty-three billion, one hundred thirty million, one hundred twenty-three thousand, one hundred twenty-one".