123506115 has 16 divisors (see below), whose sum is σ = 198367488. Its totient is φ = 65617376.

The previous prime is 123506051. The next prime is 123506129. The reversal of 123506115 is 511605321.

It is a cyclic number.

It is not a de Polignac number, because 123506115 - 2⁶ = 123506051 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11709 + ... + 19598.

It is an arithmetic number, because the mean of its divisors is an integer number (12397968).

Almost surely, 2^123506115 is an apocalyptic number.

123506115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123506115 is a deficient number, since it is larger than the sum of its proper divisors (74861373).

123506115 is a wasteful number, since it uses less digits than its factorization.

123506115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31578.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 123506115 is about 11113.3305088979. The cubic root of 123506115 is about 498.0001653199. Note that the first 3 decimals are identical.

The spelling of 123506115 in words is "one hundred twenty-three million, five hundred six thousand, one hundred fifteen".