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13912123 = 19732217
BaseRepresentation
bin110101000100…
…100000111011
3222011210211211
4311010200323
512030141443
61214103551
7226152061
oct65044073
928153754
1013912123
117942425
1247aabb7
132b61434
141bc2031
15134c19d
hexd4483b

13912123 has 4 divisors (see below), whose sum is σ = 14644360. Its totient is φ = 13179888.

The previous prime is 13912109. The next prime is 13912127. The reversal of 13912123 is 32121931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32121931 = 199916069.

It is a cyclic number.

It is not a de Polignac number, because 13912123 - 217 = 13781051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13912094 and 13912103.

It is not an unprimeable number, because it can be changed into a prime (13912127) 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, 366090 + ... + 366127.

It is an arithmetic number, because the mean of its divisors is an integer number (3661090).

Almost surely, 213912123 is an apocalyptic number.

13912123 is a deficient number, since it is larger than the sum of its proper divisors (732237).

13912123 is an equidigital number, since it uses as much as digits as its factorization.

13912123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732236.

The product of its digits is 324, while the sum is 22.

The square root of 13912123 is about 3729.8958430498. The cubic root of 13912123 is about 240.5088912592.

The spelling of 13912123 in words is "thirteen million, nine hundred twelve thousand, one hundred twenty-three".

Divisors: 1 19 732217 13912123