12142870 has 16 divisors (see below), whose sum is σ = 21986640. Its totient is φ = 4828384.

The previous prime is 12142829. The next prime is 12142891. The reversal of 12142870 is 7824121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1780 + ... + 5239.

It is an arithmetic number, because the mean of its divisors is an integer number (1374165).

Almost surely, 2^12142870 is an apocalyptic number.

12142870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12142870 is a deficient number, since it is larger than the sum of its proper divisors (9843770).

12142870 is a wasteful number, since it uses less digits than its factorization.

12142870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7199.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 12142870 is about 3484.6621070055. The cubic root of 12142870 is about 229.8478514845.

Adding to 12142870 its reverse (7824121), we get a palindrome (19966991).

The spelling of 12142870 in words is "twelve million, one hundred forty-two thousand, eight hundred seventy".