2042815 has 4 divisors (see below), whose sum is σ = 2451384. Its totient is φ = 1634248.

The previous prime is 2042813. The next prime is 2042819. The reversal of 2042815 is 5182402.

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

It is a cyclic number.

It is not a de Polignac number, because 2042815 - 2¹ = 2042813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204277 + ... + 204286.

It is an arithmetic number, because the mean of its divisors is an integer number (612846).

2^2042815 is an apocalyptic number.

2042815 is a deficient number, since it is larger than the sum of its proper divisors (408569).

2042815 is an equidigital number, since it uses as much as digits as its factorization.

2042815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408568.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2042815 is about 1429.2707930970. The cubic root of 2042815 is about 126.8848233474.

The spelling of 2042815 in words is "two million, forty-two thousand, eight hundred fifteen".