2105404205 has 8 divisors (see below), whose sum is σ = 2613605400. Its totient is φ = 1626243136.

The previous prime is 2105404183. The next prime is 2105404211. The reversal of 2105404205 is 5024045012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 40883236 + 2064520969 = 6394^2 + 45437^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2105404205 - 2¹⁴ = 2105387821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7259870 + ... + 7260159.

It is an arithmetic number, because the mean of its divisors is an integer number (326700675).

Almost surely, 2^2105404205 is an apocalyptic number.

It is an amenable number.

2105404205 is a deficient number, since it is larger than the sum of its proper divisors (508201195).

2105404205 is a wasteful number, since it uses less digits than its factorization.

2105404205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14520063.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 2105404205 is about 45884.6837735644. The cubic root of 2105404205 is about 1281.6767180529.

Adding to 2105404205 its reverse (5024045012), we get a palindrome (7129449217).

The spelling of 2105404205 in words is "two billion, one hundred five million, four hundred four thousand, two hundred five".