3420535205 has 4 divisors (see below), whose sum is σ = 4104642252. Its totient is φ = 2736428160.

The previous prime is 3420535193. The next prime is 3420535243. The reversal of 3420535205 is 5025350243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5025350243 = 101 ⋅49755943.

It can be written as a sum of positive squares in 2 ways, for example, as 2504201764 + 916333441 = 50042^2 + 30271^2 .

It is not a de Polignac number, because 3420535205 - 2⁶ = 3420535141 is a prime.

It is a super-2 number, since 2×3420535205² = 23400122177288784050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342053516 + ... + 342053525.

It is an arithmetic number, because the mean of its divisors is an integer number (1026160563).

Almost surely, 2^3420535205 is an apocalyptic number.

It is an amenable number.

3420535205 is a deficient number, since it is larger than the sum of its proper divisors (684107047).

3420535205 is an equidigital number, since it uses as much as digits as its factorization.

3420535205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684107046.

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 3420535205 is about 58485.3417960432. The cubic root of 3420535205 is about 1506.7158430567.

Adding to 3420535205 its reverse (5025350243), we get a palindrome (8445885448).

The spelling of 3420535205 in words is "three billion, four hundred twenty million, five hundred thirty-five thousand, two hundred five".