Search a number
-
+
200121247 is a prime number
BaseRepresentation
bin10111110110110…
…01101110011111
3111221120012202001
423323121232133
5402212334442
631505143131
74650000604
oct1373315637
9457505661
10200121247
11a2a66067
125702aaa7
13325ca551
141c8146ab
15128802b7
hexbed9b9f

200121247 has 2 divisors, whose sum is σ = 200121248. Its totient is φ = 200121246.

The previous prime is 200121241. The next prime is 200121329. The reversal of 200121247 is 742121002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-200121247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060623 + 100060624.

It is an arithmetic number, because the mean of its divisors is an integer number (100060624).

Almost surely, 2200121247 is an apocalyptic number.

200121247 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121247 is an equidigital number, since it uses as much as digits as its factorization.

200121247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 200121247 is about 14146.4217030315. The cubic root of 200121247 is about 584.9216998960.

Adding to 200121247 its reverse (742121002), we get a palindrome (942242249).

The spelling of 200121247 in words is "two hundred million, one hundred twenty-one thousand, two hundred forty-seven".