12107858 has 16 divisors (see below), whose sum is σ = 21199104. Its totient is φ = 5078400.

The previous prime is 12107839. The next prime is 12107861. The reversal of 12107858 is 85870121.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

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, 8543 + ... + 9858.

It is an arithmetic number, because the mean of its divisors is an integer number (1324944).

Almost surely, 2^12107858 is an apocalyptic number.

12107858 is a deficient number, since it is larger than the sum of its proper divisors (9091246).

12107858 is a wasteful number, since it uses less digits than its factorization.

12107858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18457.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 12107858 is about 3479.6347509473. The cubic root of 12107858 is about 229.6267291337.

Adding to 12107858 its reverse (85870121), we get a palindrome (97977979).

The spelling of 12107858 in words is "twelve million, one hundred seven thousand, eight hundred fifty-eight".