12432132123421 has 8 divisors (see below), whose sum is σ = 13735757231424. Its totient is φ = 11192098484160.

The previous prime is 12432132123413. The next prime is 12432132123431. The reversal of 12432132123421 is 12432123123421.

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

It is a cyclic number.

It is not a de Polignac number, because 12432132123421 - 2³ = 12432132123413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432132123431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15897866775 + ... + 15897867556.

It is an arithmetic number, because the mean of its divisors is an integer number (1716969653928).

Almost surely, 2^{12432132123421} is an apocalyptic number.

It is an amenable number.

12432132123421 is a deficient number, since it is larger than the sum of its proper divisors (1303625108003).

12432132123421 is a wasteful number, since it uses less digits than its factorization.

12432132123421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31795734371.

The product of its digits is 13824, while the sum is 31.

Adding to 12432132123421 its reverse (12432123123421), we get a palindrome (24864255246842).

Subtracting from 12432132123421 its reverse (12432123123421), we obtain a square (9000000 = 3000²).

The spelling of 12432132123421 in words is "twelve trillion, four hundred thirty-two billion, one hundred thirty-two million, one hundred twenty-three thousand, four hundred twenty-one".