123506506 has 8 divisors (see below), whose sum is σ = 189201600. Its totient is φ = 60439308.

The previous prime is 123506503. The next prime is 123506507. The reversal of 123506506 is 605605321.

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

It is not an unprimeable number, because it can be changed into a prime (123506503) 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, 656856 + ... + 657043.

It is an arithmetic number, because the mean of its divisors is an integer number (23650200).

Almost surely, 2^123506506 is an apocalyptic number.

123506506 is a deficient number, since it is larger than the sum of its proper divisors (65695094).

123506506 is a wasteful number, since it uses less digits than its factorization.

123506506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313948.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 123506506 is about 11113.3481003701. The cubic root of 123506506 is about 498.0006908481. Note that the first 3 decimals are identical.

The spelling of 123506506 in words is "one hundred twenty-three million, five hundred six thousand, five hundred six".