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12144079 = 95312743
BaseRepresentation
bin101110010100…
…110111001111
3211211222112201
4232110313033
511102102304
61112142331
7205136323
oct56246717
924758481
1012144079
116945032
1240979a7
13269275c
141881983
1510ed3a4
hexb94dcf

12144079 has 4 divisors (see below), whose sum is σ = 12157776. Its totient is φ = 12130384.

The previous prime is 12144071. The next prime is 12144101. The reversal of 12144079 is 97044121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97044121 = 293346349.

It is a cyclic number.

It is not a de Polignac number, because 12144079 - 23 = 12144071 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 (12144071) 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, 5419 + ... + 7324.

It is an arithmetic number, because the mean of its divisors is an integer number (3039444).

Almost surely, 212144079 is an apocalyptic number.

12144079 is a deficient number, since it is larger than the sum of its proper divisors (13697).

12144079 is an equidigital number, since it uses as much as digits as its factorization.

12144079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13696.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 12144079 is about 3484.8355771829. The cubic root of 12144079 is about 229.8554794679.

The spelling of 12144079 in words is "twelve million, one hundred forty-four thousand, seventy-nine".

Divisors: 1 953 12743 12144079