123130005 has 8 divisors (see below), whose sum is σ = 197008032. Its totient is φ = 65669328.

The previous prime is 123130003. The next prime is 123130039. The reversal of 123130005 is 500031321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123130005 - 2¹ = 123130003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 8208667 = 123130005 / (1 + 2 + 3 + 1 + 3 + 0 + 0 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123130001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4104319 + ... + 4104348.

It is an arithmetic number, because the mean of its divisors is an integer number (24626004).

Almost surely, 2^123130005 is an apocalyptic number.

123130005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123130005 is a deficient number, since it is larger than the sum of its proper divisors (73878027).

123130005 is an equidigital number, since it uses as much as digits as its factorization.

123130005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8208675.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 123130005 is about 11096.3960365517. The cubic root of 123130005 is about 497.4941356008.

Adding to 123130005 its reverse (500031321), we get a palindrome (623161326).

The spelling of 123130005 in words is "one hundred twenty-three million, one hundred thirty thousand, five".