2042505 has 12 divisors (see below), whose sum is σ = 3540420. Its totient is φ = 1089312.

The previous prime is 2042489. The next prime is 2042531. The reversal of 2042505 is 5052402.

It can be written as a sum of positive squares in 2 ways, for example, as 1115136 + 927369 = 1056^2 + 963^2 .

It is not a de Polignac number, because 2042505 - 2⁴ = 2042489 is a prime.

It is a plaindrome in base 13.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 22650 + ... + 22739.

It is an arithmetic number, because the mean of its divisors is an integer number (295035).

2^2042505 is an apocalyptic number.

It is an amenable number.

2042505 is a deficient number, since it is larger than the sum of its proper divisors (1497915).

2042505 is a wasteful number, since it uses less digits than its factorization.

2042505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45400 (or 45397 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2042505 is about 1429.1623420731. The cubic root of 2042505 is about 126.8784047069.

Adding to 2042505 its reverse (5052402), we get a palindrome (7094907).

The spelling of 2042505 in words is "two million, forty-two thousand, five hundred five".