235420 has 24 divisors (see below), whose sum is σ = 504000. Its totient is φ = 92352.

The previous prime is 235397. The next prime is 235439. The reversal of 235420 is 24532.

It is a junction number, because it is equal to n+sod(n) for n = 235394 and 235403.

It is a congruent number.

It is an unprimeable number.

235420 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 1506 + ... + 1654.

It is an arithmetic number, because the mean of its divisors is an integer number (21000).

2²³⁵⁴²⁰ is an apocalyptic number.

235420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

235420 is an abundant number, since it is smaller than the sum of its proper divisors (268580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

235420 is a wasteful number, since it uses less digits than its factorization.

235420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 235420 is about 485.2009892818. The cubic root of 235420 is about 61.7467994866.

Adding to 235420 its reverse (24532), we get a palindrome (259952).

The spelling of 235420 in words is "two hundred thirty-five thousand, four hundred twenty".