123923915 has 8 divisors (see below), whose sum is σ = 152728080. Its totient is φ = 96459552.

The previous prime is 123923881. The next prime is 123923923. The reversal of 123923915 is 519329321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123923915 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334745 + ... + 335114.

It is an arithmetic number, because the mean of its divisors is an integer number (19091010).

Almost surely, 2^123923915 is an apocalyptic number.

123923915 is a deficient number, since it is larger than the sum of its proper divisors (28804165).

123923915 is an equidigital number, since it uses as much as digits as its factorization.

123923915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669901.

The product of its digits is 14580, while the sum is 35.

The square root of 123923915 is about 11132.1118840946. Note that the first 3 decimals coincide. The cubic root of 123923915 is about 498.5610830081.

The spelling of 123923915 in words is "one hundred twenty-three million, nine hundred twenty-three thousand, nine hundred fifteen".