12150075 has 24 divisors (see below), whose sum is σ = 22958848. Its totient is φ = 5554080.

The previous prime is 12150071. The next prime is 12150077. The reversal of 12150075 is 57005121.

It is not a de Polignac number, because 12150075 - 2² = 12150071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12150071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11047 + ... + 12096.

Almost surely, 2^12150075 is an apocalyptic number.

12150075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12150075 is a deficient number, since it is larger than the sum of its proper divisors (10808773).

12150075 is a wasteful number, since it uses less digits than its factorization.

12150075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23163 (or 23158 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 12150075 is about 3485.6957698571. The cubic root of 12150075 is about 229.8933027476.

Adding to 12150075 its reverse (57005121), we get a palindrome (69155196).

The spelling of 12150075 in words is "twelve million, one hundred fifty thousand, seventy-five".