123247005 has 24 divisors (see below), whose sum is σ = 229391712. Its totient is φ = 56341152.

The previous prime is 123246973. The next prime is 123247043. The reversal of 123247005 is 500742321.

It is not a de Polignac number, because 123247005 - 2⁵ = 123246973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83107 + ... + 84576.

It is an arithmetic number, because the mean of its divisors is an integer number (9557988).

Almost surely, 2^123247005 is an apocalyptic number.

123247005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123247005 is a deficient number, since it is larger than the sum of its proper divisors (106144707).

123247005 is a wasteful number, since it uses less digits than its factorization.

123247005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167705 (or 167698 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 123247005 is about 11101.6667667517. Note that the first 3 decimals coincide. The cubic root of 123247005 is about 497.6516612104.

Adding to 123247005 its reverse (500742321), we get a palindrome (623989326).

The spelling of 123247005 in words is "one hundred twenty-three million, two hundred forty-seven thousand, five".