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42011241205 = 5181132135141
BaseRepresentation
bin100111001000000100…
…001010101011110101
311000102211120011202111
4213020010022223311
51142014334204310
631144422411021
73015035441533
oct471004125365
9130384504674
1042011241205
11168a928335a
128185590a71
133c6696440b
142067751153
15115d36a28a
hex9c810aaf5

42011241205 has 16 divisors (see below), whose sum is σ = 50731834608. Its totient is φ = 33397056000.

The previous prime is 42011241203. The next prime is 42011241241. The reversal of 42011241205 is 50214211024.

It can be written as a sum of positive squares in 8 ways, for example, as 1636768849 + 40374472356 = 40457^2 + 200934^2 .

It is not a de Polignac number, because 42011241205 - 21 = 42011241203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42011241203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1177935 + ... + 1213075.

It is an arithmetic number, because the mean of its divisors is an integer number (3170739663).

Almost surely, 242011241205 is an apocalyptic number.

It is an amenable number.

42011241205 is a deficient number, since it is larger than the sum of its proper divisors (8720593403).

42011241205 is a wasteful number, since it uses less digits than its factorization.

42011241205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36648.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 42011241205 its reverse (50214211024), we get a palindrome (92225452229).

The spelling of 42011241205 in words is "forty-two billion, eleven million, two hundred forty-one thousand, two hundred five".

Divisors: 1 5 181 905 1321 6605 35141 175705 239101 1195505 6360521 31802605 46421261 232106305 8402248241 42011241205