12290145 has 32 divisors (see below), whose sum is σ = 22821888. Its totient is φ = 5531328.

The previous prime is 12290143. The next prime is 12290147. The reversal of 12290145 is 54109221.

12290145 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12290143) and next prime (12290147).

It is not a de Polignac number, because 12290145 - 2¹ = 12290143 is a prime.

It is a Curzon number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12290141) 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 31 ways as a sum of consecutive naturals, for example, 6162 + ... + 7908.

It is an arithmetic number, because the mean of its divisors is an integer number (713184).

Almost surely, 2^12290145 is an apocalyptic number.

12290145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12290145 is a deficient number, since it is larger than the sum of its proper divisors (10531743).

12290145 is a wasteful number, since it uses less digits than its factorization.

12290145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 12290145 is about 3505.7303090797. The cubic root of 12290145 is about 230.7733576612.

Adding to 12290145 its reverse (54109221), we get a palindrome (66399366).

The spelling of 12290145 in words is "twelve million, two hundred ninety thousand, one hundred forty-five".