235421405 has 8 divisors (see below), whose sum is σ = 285303384. Its totient is φ = 186472000.

The previous prime is 235421401. The next prime is 235421411. The reversal of 235421405 is 504124532.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 96864964 + 138556441 = 9842^2 + 11771^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 235421405 - 2² = 235421401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235421401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232586 + ... + 233595.

It is an arithmetic number, because the mean of its divisors is an integer number (35662923).

Almost surely, 2^235421405 is an apocalyptic number.

It is an amenable number.

235421405 is a deficient number, since it is larger than the sum of its proper divisors (49881979).

235421405 is a wasteful number, since it uses less digits than its factorization.

235421405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466287.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 235421405 is about 15343.4482760558. The cubic root of 235421405 is about 617.4692232253.

Adding to 235421405 its reverse (504124532), we get a palindrome (739545937).

The spelling of 235421405 in words is "two hundred thirty-five million, four hundred twenty-one thousand, four hundred five".