10123905 has 16 divisors (see below), whose sum is σ = 17671104. Its totient is φ = 4908480.

The previous prime is 10123849. The next prime is 10123907. The reversal of 10123905 is 50932101.

It is not a de Polignac number, because 10123905 - 2⁷ = 10123777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10123907) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 30514 + ... + 30843.

It is an arithmetic number, because the mean of its divisors is an integer number (1104444).

Almost surely, 2^10123905 is an apocalyptic number.

10123905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10123905 is a deficient number, since it is larger than the sum of its proper divisors (7547199).

10123905 is a wasteful number, since it uses less digits than its factorization.

10123905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61376.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 10123905 is about 3181.8084480371. The cubic root of 10123905 is about 216.3296364339.

The spelling of 10123905 in words is "ten million, one hundred twenty-three thousand, nine hundred five".