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BaseRepresentation
bin100010101110001001
321020002022
4202232021
514022332
63014225
71131425
oct425611
9236068
10142217
1197939
126a375
134c96a
1439b85
152c212
hex22b89

142217 has 2 divisors, whose sum is σ = 142218. Its totient is φ = 142216.

The previous prime is 142211. The next prime is 142223. The reversal of 142217 is 712241.

It is a balanced prime because it is at equal distance from previous prime (142211) and next prime (142223).

It can be written as a sum of positive squares in only one way, i.e., 141376 + 841 = 376^2 + 29^2 .

It is a cyclic number.

It is not a de Polignac number, because 142217 - 28 = 141961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142195 and 142204.

It is not a weakly prime, because it can be changed into another prime (142211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71108 + 71109.

It is an arithmetic number, because the mean of its divisors is an integer number (71109).

2142217 is an apocalyptic number.

It is an amenable number.

142217 is a deficient number, since it is larger than the sum of its proper divisors (1).

142217 is an equidigital number, since it uses as much as digits as its factorization.

142217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112, while the sum is 17.

The square root of 142217 is about 377.1166928154. The cubic root of 142217 is about 52.1975963231.

Adding to 142217 its reverse (712241), we get a palindrome (854458).

The spelling of 142217 in words is "one hundred forty-two thousand, two hundred seventeen", and thus it is an iban number.