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144120443 = 859167777
BaseRepresentation
bin10001001011100…
…01101001111011
3101001012002002012
420211301221323
5243343323233
622145000135
73400001135
oct1045615173
9331162065
10144120443
1174396905
124032304b
1323b2098c
14151d8055
15c9bc548
hex8971a7b

144120443 has 4 divisors (see below), whose sum is σ = 144289080. Its totient is φ = 143951808.

The previous prime is 144120433. The next prime is 144120451. The reversal of 144120443 is 344021441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344021441 = 622955229.

It is a cyclic number.

It is not a de Polignac number, because 144120443 - 210 = 144119419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144120413) 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, 83030 + ... + 84747.

It is an arithmetic number, because the mean of its divisors is an integer number (36072270).

Almost surely, 2144120443 is an apocalyptic number.

144120443 is a deficient number, since it is larger than the sum of its proper divisors (168637).

144120443 is an equidigital number, since it uses as much as digits as its factorization.

144120443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168636.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 144120443 is about 12005.0174094001. The cubic root of 144120443 is about 524.2943723568.

Adding to 144120443 its reverse (344021441), we get a palindrome (488141884).

The spelling of 144120443 in words is "one hundred forty-four million, one hundred twenty thousand, four hundred forty-three".

Divisors: 1 859 167777 144120443