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2013421 = 4015021
BaseRepresentation
bin111101011100011101101
310210021220011
413223203231
51003412141
6111053221
723054014
oct7534355
93707804
102013421
111155793
12811211
13556597
143a5a7b
1529b881
hex1eb8ed

2013421 has 4 divisors (see below), whose sum is σ = 2018844. Its totient is φ = 2008000.

The previous prime is 2013409. The next prime is 2013439. The reversal of 2013421 is 1243102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1929321 + 84100 = 1389^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 2013421 - 29 = 2012909 is a prime.

It is a Smith number, since the sum of its digits (13) 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.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013491) 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, 2110 + ... + 2911.

It is an arithmetic number, because the mean of its divisors is an integer number (504711).

22013421 is an apocalyptic number.

It is an amenable number.

2013421 is a deficient number, since it is larger than the sum of its proper divisors (5423).

2013421 is an equidigital number, since it uses as much as digits as its factorization.

2013421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5422.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2013421 is about 1418.9506686281. The cubic root of 2013421 is about 126.2733002775.

Adding to 2013421 its reverse (1243102), we get a palindrome (3256523).

The spelling of 2013421 in words is "two million, thirteen thousand, four hundred twenty-one".

Divisors: 1 401 5021 2013421