12421142 has 8 divisors (see below), whose sum is σ = 19232832. Its totient is φ = 6010200.

The previous prime is 12421121. The next prime is 12421163. The reversal of 12421142 is 24112421.

It is an interprime number because it is at equal distance from previous prime (12421121) and next prime (12421163).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12421142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100109 + ... + 100232.

It is an arithmetic number, because the mean of its divisors is an integer number (2404104).

Almost surely, 2^12421142 is an apocalyptic number.

12421142 is a deficient number, since it is larger than the sum of its proper divisors (6811690).

12421142 is a wasteful number, since it uses less digits than its factorization.

12421142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200374.

The product of its digits is 128, while the sum is 17.

The square root of 12421142 is about 3524.3640561100. The cubic root of 12421142 is about 231.5903765727.

Adding to 12421142 its reverse (24112421), we get a palindrome (36533563).

The spelling of 12421142 in words is "twelve million, four hundred twenty-one thousand, one hundred forty-two".