12142128 has 40 divisors (see below), whose sum is σ = 31622976. Its totient is φ = 4014400.

The previous prime is 12142103. The next prime is 12142129. The reversal of 12142128 is 82124121.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12142129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5323 + ... + 7253.

Almost surely, 2^12142128 is an apocalyptic number.

It is an amenable number.

12142128 is an abundant number, since it is smaller than the sum of its proper divisors (19480848).

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

12142128 is a wasteful number, since it uses less digits than its factorization.

12142128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073 (or 2067 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

The square root of 12142128 is about 3484.5556388154. Note that the first 3 decimals coincide. The cubic root of 12142128 is about 229.8431697089.

Adding to 12142128 its reverse (82124121), we get a palindrome (94266249).

The spelling of 12142128 in words is "twelve million, one hundred forty-two thousand, one hundred twenty-eight".