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4144143 = 31381381
BaseRepresentation
bin1111110011110000001111
321210112200210
433303300033
52030103033
6224453503
750140023
oct17636017
97715623
104144143
112380613
12147a293
13b21373
1479c383
1556cd63
hex3f3c0f

4144143 has 4 divisors (see below), whose sum is σ = 5525528. Its totient is φ = 2762760.

The previous prime is 4144121. The next prime is 4144159. The reversal of 4144143 is 3414414.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4144143 - 26 = 4144079 is a prime.

It is a D-number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4144043) 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, 690688 + ... + 690693.

It is an arithmetic number, because the mean of its divisors is an integer number (1381382).

Almost surely, 24144143 is an apocalyptic number.

4144143 is a deficient number, since it is larger than the sum of its proper divisors (1381385).

4144143 is a wasteful number, since it uses less digits than its factorization.

4144143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381384.

The product of its digits is 768, while the sum is 21.

The square root of 4144143 is about 2035.7168270661. The cubic root of 4144143 is about 160.6244219170.

Adding to 4144143 its reverse (3414414), we get a palindrome (7558557).

The spelling of 4144143 in words is "four million, one hundred forty-four thousand, one hundred forty-three".

Divisors: 1 3 1381381 4144143