235405 has 12 divisors (see below), whose sum is σ = 298620. Its totient is φ = 178112.

The previous prime is 235397. The next prime is 235439. The reversal of 235405 is 504532.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64009 + 171396 = 253^2 + 414^2 .

It is not a de Polignac number, because 235405 - 2³ = 235397 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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2601 + ... + 2689.

It is an arithmetic number, because the mean of its divisors is an integer number (24885).

2²³⁵⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

235405 is a deficient number, since it is larger than the sum of its proper divisors (63215).

235405 is an equidigital number, since it uses as much as digits as its factorization.

235405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 235405 is about 485.1855315238. The cubic root of 235405 is about 61.7454880409.

Adding to 235405 its reverse (504532), we get a palindrome (739937).

The spelling of 235405 in words is "two hundred thirty-five thousand, four hundred five".