12145100 has 72 divisors (see below), whose sum is σ = 29383536. Its totient is φ = 4320000.

The previous prime is 12145099. The next prime is 12145103. The reversal of 12145100 is 154121.

12145100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12145103) 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, 67010 + ... + 67190.

Almost surely, 2^12145100 is an apocalyptic number.

12145100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12145100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14691768).

12145100 is an abundant number, since it is smaller than the sum of its proper divisors (17238436).

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

12145100 is a wasteful number, since it uses less digits than its factorization.

12145100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 12145100 is about 3484.9820659510. The cubic root of 12145100 is about 229.8619209024.

Adding to 12145100 its reverse (154121), we get a palindrome (12299221).

The spelling of 12145100 in words is "twelve million, one hundred forty-five thousand, one hundred".