12142305 has 40 divisors (see below), whose sum is σ = 24881472. Its totient is φ = 5549472.

The previous prime is 12142289. The next prime is 12142331. The reversal of 12142305 is 50324121.

12142305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12142305 - 2⁴ = 12142289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 694 + ... + 4976.

Almost surely, 2^12142305 is an apocalyptic number.

12142305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12142305 is an abundant number, since it is smaller than the sum of its proper divisors (12739167).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12142305 is an equidigital number, since it uses as much as digits as its factorization.

12142305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307 (or 4298 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12142305 is about 3484.5810365093. The cubic root of 12142305 is about 229.8442865379.

Adding to 12142305 its reverse (50324121), we get a palindrome (62466426).

The spelling of 12142305 in words is "twelve million, one hundred forty-two thousand, three hundred five".