Search a number
-
+
144279 = 32172341
BaseRepresentation
bin100011001110010111
321022220200
4203032113
514104104
63031543
71140432
oct431627
9238820
10144279
1199443
126b5b3
1350895
143a819
152cb39
hex23397

144279 has 24 divisors (see below), whose sum is σ = 235872. Its totient is φ = 84480.

The previous prime is 144271. The next prime is 144289. The reversal of 144279 is 972441.

It is a happy number.

It is not a de Polignac number, because 144279 - 23 = 144271 is a prime.

Its product of digits (2016) is a multiple of the sum of its prime divisors (84).

144279 is a lucky number.

It is a nialpdrome in base 11.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 144279.

It is not an unprimeable number, because it can be changed into a prime (144271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3499 + ... + 3539.

It is an arithmetic number, because the mean of its divisors is an integer number (9828).

2144279 is an apocalyptic number.

144279 is a deficient number, since it is larger than the sum of its proper divisors (91593).

144279 is a wasteful number, since it uses less digits than its factorization.

144279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 84 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 144279 is about 379.8407561071. The cubic root of 144279 is about 52.4486572884.

It can be divided in two parts, 1442 and 79, that added together give a square (1521 = 392).

The spelling of 144279 in words is "one hundred forty-four thousand, two hundred seventy-nine".

Divisors: 1 3 9 17 23 41 51 69 123 153 207 369 391 697 943 1173 2091 2829 3519 6273 8487 16031 48093 144279