2042245 has 8 divisors (see below), whose sum is σ = 2462616. Its totient is φ = 1625856.

The previous prime is 2042237. The next prime is 2042263. The reversal of 2042245 is 5422402.

It can be written as a sum of positive squares in 4 ways, for example, as 42849 + 1999396 = 207^2 + 1414^2 .

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 2042245 - 2³ = 2042237 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 289 + ... + 2041.

It is an arithmetic number, because the mean of its divisors is an integer number (307827).

2^2042245 is an apocalyptic number.

It is an amenable number.

2042245 is a deficient number, since it is larger than the sum of its proper divisors (420371).

2042245 is a wasteful number, since it uses less digits than its factorization.

2042245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 2042245 is about 1429.0713768038. The cubic root of 2042245 is about 126.8730208303.

Adding to 2042245 its reverse (5422402), we get a palindrome (7464647).

The spelling of 2042245 in words is "two million, forty-two thousand, two hundred forty-five".