140012105 has 4 divisors (see below), whose sum is σ = 168014532. Its totient is φ = 112009680.

The previous prime is 140012077. The next prime is 140012113. The reversal of 140012105 is 501210041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501210041 = 10303 ⋅48647.

It can be written as a sum of positive squares in 2 ways, for example, as 108326464 + 31685641 = 10408^2 + 5629^2 .

It is not a de Polignac number, because 140012105 - 2²⁰ = 138963529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 140012105.

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 3 ways as a sum of consecutive naturals, for example, 14001206 + ... + 14001215.

It is an arithmetic number, because the mean of its divisors is an integer number (42003633).

Almost surely, 2^140012105 is an apocalyptic number.

It is an amenable number.

140012105 is a deficient number, since it is larger than the sum of its proper divisors (28002427).

140012105 is an equidigital number, since it uses as much as digits as its factorization.

140012105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28002426.

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

The square root of 140012105 is about 11832.6710847551. The cubic root of 140012105 is about 519.2643752636.

Adding to 140012105 its reverse (501210041), we get a palindrome (641222146).

The spelling of 140012105 in words is "one hundred forty million, twelve thousand, one hundred five".