Search a number
-
+
421181 is a prime number
BaseRepresentation
bin1100110110100111101
3210101202022
41212310331
5101434211
613005525
73402635
oct1466475
9711668
10421181
11268492
121838a5
13119927
14ad6c5
1584bdb
hex66d3d

421181 has 2 divisors, whose sum is σ = 421182. Its totient is φ = 421180.

The previous prime is 421177. The next prime is 421189. The reversal of 421181 is 181124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403225 + 17956 = 635^2 + 134^2 .

It is a cyclic number.

It is not a de Polignac number, because 421181 - 22 = 421177 is a prime.

It is a super-2 number, since 2×4211812 = 354786869522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 421181.

It is not a weakly prime, because it can be changed into another prime (421189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210590 + 210591.

It is an arithmetic number, because the mean of its divisors is an integer number (210591).

2421181 is an apocalyptic number.

It is an amenable number.

421181 is a deficient number, since it is larger than the sum of its proper divisors (1).

421181 is an equidigital number, since it uses as much as digits as its factorization.

421181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64, while the sum is 17.

The square root of 421181 is about 648.9845914966. The cubic root of 421181 is about 74.9588515022.

The spelling of 421181 in words is "four hundred twenty-one thousand, one hundred eighty-one".