12142428 has 24 divisors (see below), whose sum is σ = 28396032. Its totient is φ = 4038384.

The previous prime is 12142423. The next prime is 12142433. The reversal of 12142428 is 82424121.

It is an interprime number because it is at equal distance from previous prime (12142423) and next prime (12142433).

It is a junction number, because it is equal to n+sod(n) for n = 12142398 and 12142407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142423) 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 7 ways as a sum of consecutive naturals, for example, 6451 + ... + 8117.

It is an arithmetic number, because the mean of its divisors is an integer number (1183168).

Almost surely, 2^12142428 is an apocalyptic number.

It is an amenable number.

12142428 is an abundant number, since it is smaller than the sum of its proper divisors (16253604).

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

12142428 is a wasteful number, since it uses less digits than its factorization.

12142428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281 (or 2279 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

The square root of 12142428 is about 3484.5986856452. The cubic root of 12142428 is about 229.8450626330.

Adding to 12142428 its reverse (82424121), we get a palindrome (94566549).

The spelling of 12142428 in words is "twelve million, one hundred forty-two thousand, four hundred twenty-eight".