2042521 has 8 divisors (see below), whose sum is σ = 2237760. Its totient is φ = 1852752.

The previous prime is 2042489. The next prime is 2042531. The reversal of 2042521 is 1252402.

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 2042521 - 2⁵ = 2042489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2042495 and 2042504.

It is not an unprimeable number, because it can be changed into a prime (2042531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565 + ... + 2098.

It is an arithmetic number, because the mean of its divisors is an integer number (279720).

2^2042521 is an apocalyptic number.

It is an amenable number.

2042521 is a deficient number, since it is larger than the sum of its proper divisors (195239).

2042521 is a wasteful number, since it uses less digits than its factorization.

2042521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2042521 is about 1429.1679397468. The cubic root of 2042521 is about 126.8787360075.

Adding to 2042521 its reverse (1252402), we get a palindrome (3294923).

The spelling of 2042521 in words is "two million, forty-two thousand, five hundred twenty-one".