2845421 has 4 divisors (see below), whose sum is σ = 2995200. Its totient is φ = 2695644.

The previous prime is 2845417. The next prime is 2845433. The reversal of 2845421 is 1245482.

It is a happy number.

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 not a de Polignac number, because 2845421 - 2² = 2845417 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 (2845481) 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, 74861 + ... + 74898.

It is an arithmetic number, because the mean of its divisors is an integer number (748800).

2^2845421 is an apocalyptic number.

It is an amenable number.

2845421 is a deficient number, since it is larger than the sum of its proper divisors (149779).

2845421 is a wasteful number, since it uses less digits than its factorization.

2845421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149778.

The product of its digits is 2560, while the sum is 26.

The square root of 2845421 is about 1686.8375736863. The cubic root of 2845421 is about 141.7040221367.

The spelling of 2845421 in words is "two million, eight hundred forty-five thousand, four hundred twenty-one".