123296005 has 12 divisors (see below), whose sum is σ = 172111500. Its totient is φ = 84545664.

The previous prime is 123296003. The next prime is 123296009. The reversal of 123296005 is 500692321.

It can be written as a sum of positive squares in 2 ways, for example, as 24770529 + 98525476 = 4977^2 + 9926^2 .

It is not a de Polignac number, because 123296005 - 2¹ = 123296003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123296003) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 251380 + ... + 251869.

It is an arithmetic number, because the mean of its divisors is an integer number (14342625).

Almost surely, 2^123296005 is an apocalyptic number.

It is an amenable number.

123296005 is a deficient number, since it is larger than the sum of its proper divisors (48815495).

123296005 is an equidigital number, since it uses as much as digits as its factorization.

123296005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503268 (or 503261 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 123296005 is about 11103.8734232699. The cubic root of 123296005 is about 497.7176038554.

The spelling of 123296005 in words is "one hundred twenty-three million, two hundred ninety-six thousand, five".