12402215423 has 4 divisors (see below), whose sum is σ = 13356232008. Its totient is φ = 11448198840.

The previous prime is 12402215417. The next prime is 12402215453. The reversal of 12402215423 is 32451220421.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-12402215423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12402215392 and 12402215401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402215453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477008273 + ... + 477008298.

It is an arithmetic number, because the mean of its divisors is an integer number (3339058002).

Almost surely, 2^12402215423 is an apocalyptic number.

12402215423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12402215423 is a deficient number, since it is larger than the sum of its proper divisors (954016585).

12402215423 is an equidigital number, since it uses as much as digits as its factorization.

12402215423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954016584.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 12402215423 its reverse (32451220421), we get a palindrome (44853435844).

The spelling of 12402215423 in words is "twelve billion, four hundred two million, two hundred fifteen thousand, four hundred twenty-three".