3042905 has 4 divisors (see below), whose sum is σ = 3651492. Its totient is φ = 2434320.

The previous prime is 3042901. The next prime is 3042911. The reversal of 3042905 is 5092403.

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 1157776 + 1885129 = 1076^2 + 1373^2 .

It is not a de Polignac number, because 3042905 - 2² = 3042901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3042901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304286 + ... + 304295.

It is an arithmetic number, because the mean of its divisors is an integer number (912873).

Almost surely, 2^3042905 is an apocalyptic number.

It is an amenable number.

3042905 is a deficient number, since it is larger than the sum of its proper divisors (608587).

3042905 is an equidigital number, since it uses as much as digits as its factorization.

3042905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608586.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 3042905 is about 1744.3924443771. The cubic root of 3042905 is about 144.9092575327.

The spelling of 3042905 in words is "three million, forty-two thousand, nine hundred five".