12032147 has 4 divisors (see below), whose sum is σ = 12325656. Its totient is φ = 11738640.

The previous prime is 12032143. The next prime is 12032173. The reversal of 12032147 is 74123021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74123021 = 7 ⋅10589003.

It is a cyclic number.

It is not a de Polignac number, because 12032147 - 2² = 12032143 is a prime.

It is a super-2 number, since 2×12032147² = 289545122859218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12032143) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 146693 + ... + 146774.

It is an arithmetic number, because the mean of its divisors is an integer number (3081414).

Almost surely, 2^12032147 is an apocalyptic number.

12032147 is a deficient number, since it is larger than the sum of its proper divisors (293509).

12032147 is an equidigital number, since it uses as much as digits as its factorization.

12032147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293508.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 12032147 is about 3468.7385315126. The cubic root of 12032147 is about 229.1471058272.

Adding to 12032147 its reverse (74123021), we get a palindrome (86155168).

The spelling of 12032147 in words is "twelve million, thirty-two thousand, one hundred forty-seven".