123827 has 4 divisors (see below), whose sum is σ = 135096. Its totient is φ = 112560.

The previous prime is 123821. The next prime is 123829. The reversal of 123827 is 728321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5618 + ... + 5639.

It is an arithmetic number, because the mean of its divisors is an integer number (33774).

2¹²³⁸²⁷ is an apocalyptic number.

123827 is a deficient number, since it is larger than the sum of its proper divisors (11269).

123827 is a wasteful number, since it uses less digits than its factorization.

123827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11268.

The product of its digits is 672, while the sum is 23.

The square root of 123827 is about 351.8906080020. The cubic root of 123827 is about 49.8431082143.

The spelling of 123827 in words is "one hundred twenty-three thousand, eight hundred twenty-seven".