235685421 has 6 divisors (see below), whose sum is σ = 340434510. Its totient is φ = 157123608.

The previous prime is 235685413. The next prime is 235685447. The reversal of 235685421 is 124586532.

235685421 is a `hidden beast` number, since 23 + 568 + 54 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 173054025 + 62631396 = 13155^2 + 7914^2 .

It is not a de Polignac number, because 235685421 - 2³ = 235685413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235685221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13093626 + ... + 13093643.

It is an arithmetic number, because the mean of its divisors is an integer number (56739085).

Almost surely, 2^235685421 is an apocalyptic number.

It is an amenable number.

235685421 is a deficient number, since it is larger than the sum of its proper divisors (104749089).

235685421 is a wasteful number, since it uses less digits than its factorization.

235685421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26187275 (or 26187272 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 235685421 is about 15352.0494071639. The cubic root of 235685421 is about 617.6999596098.

The spelling of 235685421 in words is "two hundred thirty-five million, six hundred eighty-five thousand, four hundred twenty-one".