12420343 has 8 divisors (see below), whose sum is σ = 13407408. Its totient is φ = 11437824.

The previous prime is 12420341. The next prime is 12420347. The reversal of 12420343 is 34302421.

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 12420343 - 2¹ = 12420341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12420343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420341) 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, 6471 + ... + 8167.

It is an arithmetic number, because the mean of its divisors is an integer number (1675926).

Almost surely, 2^12420343 is an apocalyptic number.

12420343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12420343 is a deficient number, since it is larger than the sum of its proper divisors (987065).

12420343 is a wasteful number, since it uses less digits than its factorization.

12420343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 12420343 is about 3524.2507005036. The cubic root of 12420343 is about 231.5854107202.

Adding to 12420343 its reverse (34302421), we get a palindrome (46722764).

The spelling of 12420343 in words is "twelve million, four hundred twenty thousand, three hundred forty-three".