12140105 has 4 divisors (see below), whose sum is σ = 14568132. Its totient is φ = 9712080.

The previous prime is 12140081. The next prime is 12140111. The reversal of 12140105 is 50104121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4227136 + 7912969 = 2056^2 + 2813^2 .

It is not a de Polignac number, because 12140105 - 2⁸ = 12139849 is a prime.

It is a super-2 number, since 2×12140105² = 294764298822050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12140105.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1214006 + ... + 1214015.

It is an arithmetic number, because the mean of its divisors is an integer number (3642033).

Almost surely, 2^12140105 is an apocalyptic number.

It is an amenable number.

12140105 is a deficient number, since it is larger than the sum of its proper divisors (2428027).

12140105 is an equidigital number, since it uses as much as digits as its factorization.

12140105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428026.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 12140105 is about 3484.2653458082. The cubic root of 12140105 is about 229.8304042760.

Adding to 12140105 its reverse (50104121), we get a palindrome (62244226).

The spelling of 12140105 in words is "twelve million, one hundred forty thousand, one hundred five".