3402005 has 4 divisors (see below), whose sum is σ = 4082412. Its totient is φ = 2721600.

The previous prime is 3401963. The next prime is 3402013. The reversal of 3402005 is 5002043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5002043 = 79 ⋅63317.

It can be written as a sum of positive squares in 2 ways, for example, as 1957201 + 1444804 = 1399^2 + 1202^2 .

It is not a de Polignac number, because 3402005 - 2⁶ = 3401941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340196 + ... + 340205.

It is an arithmetic number, because the mean of its divisors is an integer number (1020603).

Almost surely, 2^3402005 is an apocalyptic number.

It is an amenable number.

3402005 is a deficient number, since it is larger than the sum of its proper divisors (680407).

3402005 is an equidigital number, since it uses as much as digits as its factorization.

3402005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680406.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 3402005 is about 1844.4524932890. The cubic root of 3402005 is about 150.3990117305.

Adding to 3402005 its reverse (5002043), we get a palindrome (8404048).

The spelling of 3402005 in words is "three million, four hundred two thousand, five".