12321142 has 8 divisors (see below), whose sum is σ = 18651600. Its totient is φ = 6103944.

The previous prime is 12321137. The next prime is 12321149. The reversal of 12321142 is 24112321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321149) by changing a digit.

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, 28042 + ... + 28477.

It is an arithmetic number, because the mean of its divisors is an integer number (2331450).

Almost surely, 2^12321142 is an apocalyptic number.

12321142 is a deficient number, since it is larger than the sum of its proper divisors (6330458).

12321142 is a wasteful number, since it uses less digits than its factorization.

12321142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56630.

The product of its digits is 96, while the sum is 16.

The square root of 12321142 is about 3510.1484299101. The cubic root of 12321142 is about 230.9672061041.

Adding to 12321142 its reverse (24112321), we get a palindrome (36433463).

The spelling of 12321142 in words is "twelve million, three hundred twenty-one thousand, one hundred forty-two".