112105129 has 4 divisors (see below), whose sum is σ = 113942980. Its totient is φ = 110267280.

The previous prime is 112105127. The next prime is 112105159. The reversal of 112105129 is 921501211.

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 62726400 + 49378729 = 7920^2 + 7027^2 .

It is a cyclic number.

It is not a de Polignac number, because 112105129 - 2¹ = 112105127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112105127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918834 + ... + 918955.

It is an arithmetic number, because the mean of its divisors is an integer number (28485745).

Almost surely, 2^112105129 is an apocalyptic number.

It is an amenable number.

112105129 is a deficient number, since it is larger than the sum of its proper divisors (1837851).

112105129 is an equidigital number, since it uses as much as digits as its factorization.

112105129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837850.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 112105129 is about 10587.9709576481. The cubic root of 112105129 is about 482.1792246268.

The spelling of 112105129 in words is "one hundred twelve million, one hundred five thousand, one hundred twenty-nine".