123895 has 8 divisors (see below), whose sum is σ = 151200. Its totient is φ = 97440.

The previous prime is 123887. The next prime is 123911. The reversal of 123895 is 598321.

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

It is not a de Polignac number, because 123895 - 2³ = 123887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181 + ... + 529.

It is an arithmetic number, because the mean of its divisors is an integer number (18900).

2¹²³⁸⁹⁵ is an apocalyptic number.

123895 is a deficient number, since it is larger than the sum of its proper divisors (27305).

123895 is an equidigital number, since it uses as much as digits as its factorization.

123895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425.

The product of its digits is 2160, while the sum is 28.

The square root of 123895 is about 351.9872156769. The cubic root of 123895 is about 49.8522303797.

The spelling of 123895 in words is "one hundred twenty-three thousand, eight hundred ninety-five".