12342256421 has 8 divisors (see below), whose sum is σ = 13928565600. Its totient is φ = 10833328240.

The previous prime is 12342256403. The next prime is 12342256469. The reversal of 12342256421 is 12465224321.

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 12342256421 - 2⁶ = 12342256357 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 (12342250421) 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, 19344911 + ... + 19345548.

It is an arithmetic number, because the mean of its divisors is an integer number (1741070700).

Almost surely, 2^12342256421 is an apocalyptic number.

12342256421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12342256421 is a deficient number, since it is larger than the sum of its proper divisors (1586309179).

12342256421 is a wasteful number, since it uses less digits than its factorization.

12342256421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38690499.

The product of its digits is 23040, while the sum is 32.

The spelling of 12342256421 in words is "twelve billion, three hundred forty-two million, two hundred fifty-six thousand, four hundred twenty-one".