4205423434 has 4 divisors (see below), whose sum is σ = 6308135154. Its totient is φ = 2102711716.

The previous prime is 4205423413. The next prime is 4205423447. The reversal of 4205423434 is 4343245024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2959686409 + 1245737025 = 54403^2 + 35295^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 4205423396 and 4205423405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051355857 + ... + 1051355860.

Almost surely, 2^4205423434 is an apocalyptic number.

4205423434 is a deficient number, since it is larger than the sum of its proper divisors (2102711720).

4205423434 is a wasteful number, since it uses less digits than its factorization.

4205423434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102711719.

The product of its (nonzero) digits is 46080, while the sum is 31.

The square root of 4205423434 is about 64849.2361867123. The cubic root of 4205423434 is about 1614.1228174580.

Adding to 4205423434 its reverse (4343245024), we get a palindrome (8548668458).

The spelling of 4205423434 in words is "four billion, two hundred five million, four hundred twenty-three thousand, four hundred thirty-four".