4102405 has 4 divisors (see below), whose sum is σ = 4922892. Its totient is φ = 3281920.

The previous prime is 4102393. The next prime is 4102409. The reversal of 4102405 is 5042014.

4102405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 3690241 = 642^2 + 1921^2 .

It is not a de Polignac number, because 4102405 - 2¹⁷ = 3971333 is a prime.

It is a Duffinian number.

4102405 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4102409) 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, 410236 + ... + 410245.

It is an arithmetic number, because the mean of its divisors is an integer number (1230723).

Almost surely, 2^4102405 is an apocalyptic number.

It is an amenable number.

4102405 is a deficient number, since it is larger than the sum of its proper divisors (820487).

4102405 is an equidigital number, since it uses as much as digits as its factorization.

4102405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820486.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 4102405 is about 2025.4394584880. The cubic root of 4102405 is about 160.0833550046.

Adding to 4102405 its reverse (5042014), we get a palindrome (9144419).

The spelling of 4102405 in words is "four million, one hundred two thousand, four hundred five".