432123012321 has 128 divisors (see below), whose sum is σ = 795316064256. Its totient is φ = 201404206080.

The previous prime is 432123012281. The next prime is 432123012323. The reversal of 432123012321 is 123210321234.

It is not a de Polignac number, because 432123012321 - 2¹⁸ = 432122750177 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 432123012291 and 432123012300.

It is not an unprimeable number, because it can be changed into a prime (432123012323) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 185220871 + ... + 185223203.

It is an arithmetic number, because the mean of its divisors is an integer number (6213406752).

Almost surely, 2^432123012321 is an apocalyptic number.

It is an amenable number.

432123012321 is a deficient number, since it is larger than the sum of its proper divisors (363193051935).

432123012321 is a wasteful number, since it uses less digits than its factorization.

432123012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4071.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 432123012321 its reverse (123210321234), we get a palindrome (555333333555).

The spelling of 432123012321 in words is "four hundred thirty-two billion, one hundred twenty-three million, twelve thousand, three hundred twenty-one".