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143044241 = 1121312757
BaseRepresentation
bin10001000011010…
…10111010010001
3100222011101210212
420201222322101
5243104403431
622105533505
73354566414
oct1041527221
9328141725
10143044241
117382128a
123baa4295
1323834b82
1414dd7b7b
15c85872b
hex886ae91

143044241 has 4 divisors (see below), whose sum is σ = 143068212. Its totient is φ = 143020272.

The previous prime is 143044193. The next prime is 143044267. The reversal of 143044241 is 142440341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 142440341 = 846716823.

It can be written as a sum of positive squares in 2 ways, for example, as 36954241 + 106090000 = 6079^2 + 10300^2 .

It is a cyclic number.

It is not a de Polignac number, because 143044241 - 26 = 143044177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143044541) 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, 4835 + ... + 17591.

It is an arithmetic number, because the mean of its divisors is an integer number (35767053).

Almost surely, 2143044241 is an apocalyptic number.

It is an amenable number.

143044241 is a deficient number, since it is larger than the sum of its proper divisors (23971).

143044241 is a wasteful number, since it uses less digits than its factorization.

143044241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23970.

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

The square root of 143044241 is about 11960.1104091894. The cubic root of 143044241 is about 522.9860754506.

Adding to 143044241 its reverse (142440341), we get a palindrome (285484582).

The spelling of 143044241 in words is "one hundred forty-three million, forty-four thousand, two hundred forty-one".

Divisors: 1 11213 12757 143044241