[go: up one dir, main page]

Search a number
-
+
42771601 is a prime number
BaseRepresentation
bin1010001100101…
…0010010010001
32222111000121101
42203022102101
541422142401
64124424401
71026360355
oct243122221
988430541
1042771601
1122163a34
12123a8101
138b27252
145975465
153b4d101
hex28ca491

42771601 has 2 divisors, whose sum is σ = 42771602. Its totient is φ = 42771600.

The previous prime is 42771587. The next prime is 42771611. The reversal of 42771601 is 10617724.

It is a Cunningham number, because it is equal to 65402+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42771600 + 1 = 6540^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-42771601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42771601.

It is not a weakly prime, because it can be changed into another prime (42771611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21385800 + 21385801.

It is an arithmetic number, because the mean of its divisors is an integer number (21385801).

Almost surely, 242771601 is an apocalyptic number.

It is an amenable number.

42771601 is a deficient number, since it is larger than the sum of its proper divisors (1).

42771601 is an equidigital number, since it uses as much as digits as its factorization.

42771601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 42771601 is about 6540.0000764526. Note that the first 4 decimals coincide. The cubic root of 42771601 is about 349.7184156956.

The spelling of 42771601 in words is "forty-two million, seven hundred seventy-one thousand, six hundred one".