12142658 has 16 divisors (see below), whose sum is σ = 21039264. Its totient is φ = 5194560.

The previous prime is 12142639. The next prime is 12142661. The reversal of 12142658 is 85624121.

It is a self number, because there is not a number n which added to its sum of digits gives 12142658.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15860 + ... + 16607.

It is an arithmetic number, because the mean of its divisors is an integer number (1314954).

Almost surely, 2^12142658 is an apocalyptic number.

12142658 is a deficient number, since it is larger than the sum of its proper divisors (8896606).

12142658 is a wasteful number, since it uses less digits than its factorization.

12142658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32497.

The product of its digits is 3840, while the sum is 29.

The square root of 12142658 is about 3484.6316878545. The cubic root of 12142658 is about 229.8465138538.

Adding to 12142658 its reverse (85624121), we get a palindrome (97766779).

The spelling of 12142658 in words is "twelve million, one hundred forty-two thousand, six hundred fifty-eight".