43401302121 has 8 divisors (see below), whose sum is σ = 60914108320. Its totient is φ = 27411348672.

The previous prime is 43401302117. The next prime is 43401302137. The reversal of 43401302121 is 12120310434.

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

It is not a de Polignac number, because 43401302121 - 2² = 43401302117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43401306121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380713120 + ... + 380713233.

It is an arithmetic number, because the mean of its divisors is an integer number (7614263540).

Almost surely, 2^43401302121 is an apocalyptic number.

It is an amenable number.

43401302121 is a deficient number, since it is larger than the sum of its proper divisors (17512806199).

43401302121 is a wasteful number, since it uses less digits than its factorization.

43401302121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761426375.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 43401302121 its reverse (12120310434), we get a palindrome (55521612555).

The spelling of 43401302121 in words is "forty-three billion, four hundred one million, three hundred two thousand, one hundred twenty-one".