10205123 has 4 divisors (see below), whose sum is σ = 10648848. Its totient is φ = 9761400.

The previous prime is 10205119. The next prime is 10205161. The reversal of 10205123 is 32150201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32150201 = 137 ⋅234673.

It is a cyclic number.

It is not a de Polignac number, because 10205123 - 2² = 10205119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10205098 and 10205107.

It is not an unprimeable number, because it can be changed into a prime (10205113) 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, 221828 + ... + 221873.

It is an arithmetic number, because the mean of its divisors is an integer number (2662212).

Almost surely, 2^10205123 is an apocalyptic number.

10205123 is a deficient number, since it is larger than the sum of its proper divisors (443725).

10205123 is an equidigital number, since it uses as much as digits as its factorization.

10205123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443724.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 10205123 is about 3194.5458206136. The cubic root of 10205123 is about 216.9065905032.

Adding to 10205123 its reverse (32150201), we get a palindrome (42355324).

The spelling of 10205123 in words is "ten million, two hundred five thousand, one hundred twenty-three".