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10142117 = 101100417
BaseRepresentation
bin100110101100…
…000110100101
3201002021100222
4212230012211
510044021432
61001214125
7152130566
oct46540645
921067328
1010142117
1157a7a17
123491345
13214146b
1414c016d
15d55112
hex9ac1a5

10142117 has 4 divisors (see below), whose sum is σ = 10242636. Its totient is φ = 10041600.

The previous prime is 10142113. The next prime is 10142131. The reversal of 10142117 is 71124101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71124101 = 371922273.

It can be written as a sum of positive squares in 2 ways, for example, as 5262436 + 4879681 = 2294^2 + 2209^2 .

It is a cyclic number.

It is not a de Polignac number, because 10142117 - 22 = 10142113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10142095 and 10142104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10142113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50108 + ... + 50309.

It is an arithmetic number, because the mean of its divisors is an integer number (2560659).

Almost surely, 210142117 is an apocalyptic number.

It is an amenable number.

10142117 is a deficient number, since it is larger than the sum of its proper divisors (100519).

10142117 is a wasteful number, since it uses less digits than its factorization.

10142117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100518.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 10142117 is about 3184.6690565897. The cubic root of 10142117 is about 216.4592779524.

Adding to 10142117 its reverse (71124101), we get a palindrome (81266218).

The spelling of 10142117 in words is "ten million, one hundred forty-two thousand, one hundred seventeen".

Divisors: 1 101 100417 10142117