12142322 has 4 divisors (see below), whose sum is σ = 18213486. Its totient is φ = 6071160.

The previous prime is 12142289. The next prime is 12142331. The reversal of 12142322 is 22324121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22324121 = 1327 ⋅16823.

It can be written as a sum of positive squares in only one way, i.e., 10817521 + 1324801 = 3289^2 + 1151^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12142322.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3035579 + ... + 3035582.

Almost surely, 2^12142322 is an apocalyptic number.

12142322 is a deficient number, since it is larger than the sum of its proper divisors (6071164).

12142322 is an equidigital number, since it uses as much as digits as its factorization.

12142322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071163.

The product of its digits is 192, while the sum is 17.

The square root of 12142322 is about 3484.5834758261. The cubic root of 12142322 is about 229.8443938034.

Adding to 12142322 its reverse (22324121), we get a palindrome (34466443).

The spelling of 12142322 in words is "twelve million, one hundred forty-two thousand, three hundred twenty-two".