2042621 has 8 divisors (see below), whose sum is σ = 2409984. Its totient is φ = 1694160.

The previous prime is 2042609. The next prime is 2042627. The reversal of 2042621 is 1262402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2042621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2042621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042627) 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, 4490 + ... + 4923.

It is an arithmetic number, because the mean of its divisors is an integer number (301248).

2^2042621 is an apocalyptic number.

It is an amenable number.

2042621 is a deficient number, since it is larger than the sum of its proper divisors (367363).

2042621 is an equidigital number, since it uses as much as digits as its factorization.

2042621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9451.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2042621 is about 1429.2029247101. The cubic root of 2042621 is about 126.8808065968.

The spelling of 2042621 in words is "two million, forty-two thousand, six hundred twenty-one".