12145075 has 12 divisors (see below), whose sum is σ = 15155280. Its totient is φ = 9654560.

The previous prime is 12145069. The next prime is 12145093. The reversal of 12145075 is 57054121.

It is not a de Polignac number, because 12145075 - 2⁵ = 12145043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 in 11 ways as a sum of consecutive naturals, for example, 2721 + ... + 5629.

It is an arithmetic number, because the mean of its divisors is an integer number (1262940).

Almost surely, 2^12145075 is an apocalyptic number.

12145075 is a deficient number, since it is larger than the sum of its proper divisors (3010205).

12145075 is a wasteful number, since it uses less digits than its factorization.

12145075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086 (or 3081 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 12145075 is about 3484.9784791301. The cubic root of 12145075 is about 229.8617631830.

Adding to 12145075 its reverse (57054121), we get a palindrome (69199196).

The spelling of 12145075 in words is "twelve million, one hundred forty-five thousand, seventy-five".