Search a number
BaseRepresentation
bin100010101110000011
321020002002
4202232003
514022321
63014215
71131416
oct425603
9236062
10142211
1197933
126a36b
134c964
1439b7d
152c20b
hex22b83

142211 has 2 divisors, whose sum is σ = 142212. Its totient is φ = 142210.

The previous prime is 142193. The next prime is 142217. The reversal of 142211 is 112241.

It is a strong prime.

It is an emirp because it is prime and its reverse (112241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-142211 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 142192 and 142201.

It is not a weakly prime, because it can be changed into another prime (142217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71105 + 71106.

It is an arithmetic number, because the mean of its divisors is an integer number (71106).

2142211 is an apocalyptic number.

142211 is a deficient number, since it is larger than the sum of its proper divisors (1).

142211 is an equidigital number, since it uses as much as digits as its factorization.

142211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16, while the sum is 11.

The square root of 142211 is about 377.1087376341. The cubic root of 142211 is about 52.1968622571.

Adding to 142211 its reverse (112241), we get a palindrome (254452).

It can be divided in two parts, 142 and 211, that added together give a palindrome (353).

The spelling of 142211 in words is "one hundred forty-two thousand, two hundred eleven", and thus it is an iban number.