123835 has 4 divisors (see below), whose sum is σ = 148608. Its totient is φ = 99064.

The previous prime is 123833. The next prime is 123853. The reversal of 123835 is 538321.

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

It is a cyclic number.

It is not a de Polignac number, because 123835 - 2¹ = 123833 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (123833) 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, 12379 + ... + 12388.

It is an arithmetic number, because the mean of its divisors is an integer number (37152).

2¹²³⁸³⁵ is an apocalyptic number.

123835 is a deficient number, since it is larger than the sum of its proper divisors (24773).

123835 is an equidigital number, since it uses as much as digits as its factorization.

123835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24772.

The product of its digits is 720, while the sum is 22.

The square root of 123835 is about 351.9019749874. The cubic root of 123835 is about 49.8441815835.

The spelling of 123835 in words is "one hundred twenty-three thousand, eight hundred thirty-five".