4205423 has 4 divisors (see below), whose sum is σ = 4218240. Its totient is φ = 4192608.

The previous prime is 4205393. The next prime is 4205437. The reversal of 4205423 is 3245024.

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 4205423 - 2¹⁴ = 4189039 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 4205395 and 4205404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4205473) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5903 + ... + 6576.

It is an arithmetic number, because the mean of its divisors is an integer number (1054560).

Almost surely, 2^4205423 is an apocalyptic number.

4205423 is a deficient number, since it is larger than the sum of its proper divisors (12817).

4205423 is a wasteful number, since it uses less digits than its factorization.

4205423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12816.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 4205423 is about 2050.7128029054. The cubic root of 4205423 is about 161.4122761932.

The spelling of 4205423 in words is "four million, two hundred five thousand, four hundred twenty-three".