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10042805 = 52239007
BaseRepresentation
bin100110010011…
…110110110101
3200220020010202
4212103312311
510032332210
6555130245
7151235213
oct46236665
920806122
1010042805
11573a343
123443985
1321081b6
141495cb3
15d359a5
hex993db5

10042805 has 8 divisors (see below), whose sum is σ = 12106752. Its totient is φ = 7997328.

The previous prime is 10042777. The next prime is 10042807. The reversal of 10042805 is 50824001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10042805 - 26 = 10042741 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 (10042807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3389 + ... + 5618.

It is an arithmetic number, because the mean of its divisors is an integer number (1513344).

Almost surely, 210042805 is an apocalyptic number.

It is an amenable number.

10042805 is a deficient number, since it is larger than the sum of its proper divisors (2063947).

10042805 is an equidigital number, since it uses as much as digits as its factorization.

10042805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9235.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 10042805 is about 3169.0384977150. The cubic root of 10042805 is about 215.7504333550.

Adding to 10042805 its reverse (50824001), we get a palindrome (60866806).

The spelling of 10042805 in words is "ten million, forty-two thousand, eight hundred five".

Divisors: 1 5 223 1115 9007 45035 2008561 10042805