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10142123 = 10993047
BaseRepresentation
bin100110101100…
…000110101011
3201002021101012
4212230012223
510044021443
61001214135
7152130605
oct46540653
921067335
1010142123
1157a7a22
12349134b
132141474
1414c0175
15d55118
hex9ac1ab

10142123 has 4 divisors (see below), whose sum is σ = 10235280. Its totient is φ = 10048968.

The previous prime is 10142113. The next prime is 10142131. The reversal of 10142123 is 32124101.

10142123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32124101 = 171889653.

It is a cyclic number.

It is not a de Polignac number, because 10142123 - 26 = 10142059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10142098 and 10142107.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46415 + ... + 46632.

It is an arithmetic number, because the mean of its divisors is an integer number (2558820).

Almost surely, 210142123 is an apocalyptic number.

10142123 is a deficient number, since it is larger than the sum of its proper divisors (93157).

10142123 is an equidigital number, since it uses as much as digits as its factorization.

10142123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93156.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 10142123 is about 3184.6699986027. The cubic root of 10142123 is about 216.4593206376.

Adding to 10142123 its reverse (32124101), we get a palindrome (42266224).

It can be divided in two parts, 101 and 42123, that added together give a palindrome (42224).

The spelling of 10142123 in words is "ten million, one hundred forty-two thousand, one hundred twenty-three".

Divisors: 1 109 93047 10142123