12012146 has 4 divisors (see below), whose sum is σ = 18018222. Its totient is φ = 6006072.

The previous prime is 12012137. The next prime is 12012157. The reversal of 12012146 is 64121021.

12012146 = 995² + 996² + ... + 1006².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7623121 + 4389025 = 2761^2 + 2095^2 .

It is a Curzon number.

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, 3003035 + ... + 3003038.

Almost surely, 2^12012146 is an apocalyptic number.

12012146 is a deficient number, since it is larger than the sum of its proper divisors (6006076).

12012146 is an equidigital number, since it uses as much as digits as its factorization.

12012146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006075.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 12012146 is about 3465.8542958411. The cubic root of 12012146 is about 229.0200652377.

Adding to 12012146 its reverse (64121021), we get a palindrome (76133167).

The spelling of 12012146 in words is "twelve million, twelve thousand, one hundred forty-six".