123807 has 4 divisors (see below), whose sum is σ = 165080. Its totient is φ = 82536.

The previous prime is 123803. The next prime is 123817. The reversal of 123807 is 708321.

123807 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708321 = 3 ⋅236107.

It is not a de Polignac number, because 123807 - 2² = 123803 is a prime.

It is a D-number.

It is a Duffinian number.

123807 is strictly pandigital in base 7.

123807 is a lucky number.

It is a plaindrome in base 13.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 123807.

It is not an unprimeable number, because it can be changed into a prime (123803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20632 + ... + 20637.

It is an arithmetic number, because the mean of its divisors is an integer number (41270).

2¹²³⁸⁰⁷ is an apocalyptic number.

123807 is a deficient number, since it is larger than the sum of its proper divisors (41273).

123807 is an equidigital number, since it uses as much as digits as its factorization.

123807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41272.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 123807 is about 351.8621889320. The cubic root of 123807 is about 49.8404245889.

The spelling of 123807 in words is "one hundred twenty-three thousand, eight hundred seven".