123905255 has 32 divisors (see below), whose sum is σ = 163762560. Its totient is φ = 89689600.

The previous prime is 123905227. The next prime is 123905261. The reversal of 123905255 is 552509321.

It is not a de Polignac number, because 123905255 - 2¹² = 123901159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176405 + ... + 177105.

It is an arithmetic number, because the mean of its divisors is an integer number (5117580).

Almost surely, 2^123905255 is an apocalyptic number.

123905255 is a deficient number, since it is larger than the sum of its proper divisors (39857305).

123905255 is a wasteful number, since it uses less digits than its factorization.

123905255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 123905255 is about 11131.2737366395. The cubic root of 123905255 is about 498.5360579305.

The spelling of 123905255 in words is "one hundred twenty-three million, nine hundred five thousand, two hundred fifty-five".