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4205213 = 19221327
BaseRepresentation
bin10000000010101010011101
321220122110122
4100002222131
52034031323
6230044325
750513045
oct20025235
97818418
104205213
112412491
1214a96a5
13b430bc
147b6725
15580ec8
hex402a9d

4205213 has 4 divisors (see below), whose sum is σ = 4426560. Its totient is φ = 3983868.

The previous prime is 4205191. The next prime is 4205219. The reversal of 4205213 is 3125024.

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 4205213 - 216 = 4139677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4205191 and 4205200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4205219) 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, 110645 + ... + 110682.

It is an arithmetic number, because the mean of its divisors is an integer number (1106640).

Almost surely, 24205213 is an apocalyptic number.

It is an amenable number.

4205213 is a deficient number, since it is larger than the sum of its proper divisors (221347).

4205213 is a wasteful number, since it uses less digits than its factorization.

4205213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221346.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 4205213 is about 2050.6616005572. The cubic root of 4205213 is about 161.4095894130.

The spelling of 4205213 in words is "four million, two hundred five thousand, two hundred thirteen".

Divisors: 1 19 221327 4205213