12139100 has 36 divisors (see below), whose sum is σ = 27732600. Its totient is φ = 4599360.

The previous prime is 12139051. The next prime is 12139103. The reversal of 12139100 is 193121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12139103) 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 11 ways as a sum of consecutive naturals, for example, 1295 + ... + 5094.

It is an arithmetic number, because the mean of its divisors is an integer number (770350).

Almost surely, 2^12139100 is an apocalyptic number.

12139100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12139100 is an abundant number, since it is smaller than the sum of its proper divisors (15593500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12139100 is a wasteful number, since it uses less digits than its factorization.

12139100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6422 (or 6415 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 12139100 is about 3484.1211230381. The cubic root of 12139100 is about 229.8240620484.

The spelling of 12139100 in words is "twelve million, one hundred thirty-nine thousand, one hundred".