12142100 has 18 divisors (see below), whose sum is σ = 26348574. Its totient is φ = 4856800.

The previous prime is 12142093. The next prime is 12142103. The reversal of 12142100 is 124121.

12142100 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in 3 ways, for example, as 3844 + 12138256 = 62^2 + 3484^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60611 + ... + 60810.

Almost surely, 2^12142100 is an apocalyptic number.

12142100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12142100 is an abundant number, since it is smaller than the sum of its proper divisors (14206474).

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

12142100 is a wasteful number, since it uses less digits than its factorization.

12142100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121435 (or 121428 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 12142100 is about 3484.5516210841. The cubic root of 12142100 is about 229.8429930343.

Adding to 12142100 its reverse (124121), we get a palindrome (12266221).

The spelling of 12142100 in words is "twelve million, one hundred forty-two thousand, one hundred".