Base | Representation |
---|---|
bin | 1111000011110100… |
… | …0101000111001001 |
3 | 101102201202111020121 |
4 | 3300331011013021 |
5 | 31234342343221 |
6 | 1505045423241 |
7 | 202115024200 |
oct | 36075050711 |
9 | 11381674217 |
10 | 4042543561 |
11 | 1794a018a1 |
12 | 949a0ab21 |
13 | 4c5698c14 |
14 | 2a4c6a237 |
15 | 189d7aa41 |
hex | f0f451c9 |
4042543561 has 27 divisors (see below), whose sum is σ = 4875779943. Its totient is φ = 3341817360.
The previous prime is 4042543513. The next prime is 4042543591. The reversal of 4042543561 is 1653452404.
The square root of 4042543561 is 63581.
It is a perfect power (a square), and thus also a powerful number.
4042543561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in only one way, i.e., 3824804025 + 217739536 = 61845^2 + 14756^2 .
It is not a de Polignac number, because 4042543561 - 27 = 4042543433 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (4042543591) by changing a digit.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13796931 + ... + 13797223.
Almost surely, 24042543561 is an apocalyptic number.
4042543561 is the 63581-st square number.
4042543561 is the 31791-st centered octagonal number.
It is an amenable number.
4042543561 is a deficient number, since it is larger than the sum of its proper divisors (833236382).
4042543561 is an frugal number, since it uses more digits than its factorization.
4042543561 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 662 (or 331 counting only the distinct ones).
The product of its (nonzero) digits is 57600, while the sum is 34.
The cubic root of 4042543561 is about 1593.0090245749.
Multiplying 4042543561 by its product of nonzero digits (57600), we get a square (232850509113600 = 152594402).
Adding to 4042543561 its reverse (1653452404), we get a palindrome (5695995965).
The spelling of 4042543561 in words is "four billion, forty-two million, five hundred forty-three thousand, five hundred sixty-one".
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