12423400432421 has 8 divisors (see below), whose sum is σ = 13635946488864. Its totient is φ = 11224712045520.

The previous prime is 12423400432277. The next prime is 12423400432439.

It is a happy number.

12423400432421 is nontrivially palindromic in base 10.

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 12423400432421 - 2¹⁰ = 12423400431397 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 (12423400432451) 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, 3464415506 + ... + 3464419091.

It is an arithmetic number, because the mean of its divisors is an integer number (1704493311108).

Almost surely, 2^{12423400432421} is an apocalyptic number.

12423400432421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12423400432421 is a deficient number, since it is larger than the sum of its proper divisors (1212546056443).

12423400432421 is a wasteful number, since it uses less digits than its factorization.

12423400432421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6928834771.

The product of its (nonzero) digits is 36864, while the sum is 32.

It can be divided in two parts, 12423400 and 432421, that added together give a palindrome (12855821).

The spelling of 12423400432421 in words is "twelve trillion, four hundred twenty-three billion, four hundred million, four hundred thirty-two thousand, four hundred twenty-one".