12109004 has 24 divisors (see below), whose sum is σ = 22424640. Its totient is φ = 5705424.

The previous prime is 12108961. The next prime is 12109007. The reversal of 12109004 is 40090121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12109007) 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 7 ways as a sum of consecutive naturals, for example, 21227 + ... + 21789.

It is an arithmetic number, because the mean of its divisors is an integer number (934360).

Almost surely, 2^12109004 is an apocalyptic number.

It is an amenable number.

12109004 is a deficient number, since it is larger than the sum of its proper divisors (10315636).

12109004 is a wasteful number, since it uses less digits than its factorization.

12109004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 12109004 is about 3479.7994195068. The cubic root of 12109004 is about 229.6339735731.

Adding to 12109004 its reverse (40090121), we get a palindrome (52199125).

The spelling of 12109004 in words is "twelve million, one hundred nine thousand, four".