43172341421 has 16 divisors (see below), whose sum is σ = 47201616000. Its totient is φ = 39160595520.

The previous prime is 43172341411. The next prime is 43172341451. The reversal of 43172341421 is 12414327134.

It is a cyclic number.

It is not a de Polignac number, because 43172341421 - 2²⁶ = 43105232557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43172341411) 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 15 ways as a sum of consecutive naturals, for example, 14394080 + ... + 14397078.

It is an arithmetic number, because the mean of its divisors is an integer number (2950101000).

Almost surely, 2^43172341421 is an apocalyptic number.

It is an amenable number.

43172341421 is a deficient number, since it is larger than the sum of its proper divisors (4029274579).

43172341421 is a wasteful number, since it uses less digits than its factorization.

43172341421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5476.

The product of its digits is 16128, while the sum is 32.

Adding to 43172341421 its reverse (12414327134), we get a palindrome (55586668555).

The spelling of 43172341421 in words is "forty-three billion, one hundred seventy-two million, three hundred forty-one thousand, four hundred twenty-one".