2049421 has 4 divisors (see below), whose sum is σ = 2235744. Its totient is φ = 1863100.

The previous prime is 2049419. The next prime is 2049427. The reversal of 2049421 is 1249402.

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 2049421 - 2¹ = 2049419 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

2049421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2049392 and 2049401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2049427) 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, 93145 + ... + 93166.

It is an arithmetic number, because the mean of its divisors is an integer number (558936).

2^2049421 is an apocalyptic number.

It is an amenable number.

2049421 is a deficient number, since it is larger than the sum of its proper divisors (186323).

2049421 is a wasteful number, since it uses less digits than its factorization.

2049421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186322.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2049421 is about 1431.5798964780. The cubic root of 2049421 is about 127.0214484204.

The spelling of 2049421 in words is "two million, forty-nine thousand, four hundred twenty-one".