2042569 has 4 divisors (see below), whose sum is σ = 2054160. Its totient is φ = 2030980.

The previous prime is 2042549. The next prime is 2042581. The reversal of 2042569 is 9652402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2042569 - 2¹⁹ = 1518281 is a prime.

It is a super-3 number, since 3×2042569³ = 25565333576076318027, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

2042569 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2042549) 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, 5527 + ... + 5884.

It is an arithmetic number, because the mean of its divisors is an integer number (513540).

2^2042569 is an apocalyptic number.

It is an amenable number.

2042569 is a deficient number, since it is larger than the sum of its proper divisors (11591).

2042569 is a wasteful number, since it uses less digits than its factorization.

2042569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11590.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2042569 is about 1429.1847326361. The cubic root of 2042569 is about 126.8797298988.

The spelling of 2042569 in words is "two million, forty-two thousand, five hundred sixty-nine".