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144169 is a prime number
BaseRepresentation
bin100011001100101001
321022202121
4203030221
514103134
63031241
71140214
oct431451
9238677
10144169
1199353
126b521
135080c
143a77b
152cab4
hex23329

144169 has 2 divisors, whose sum is σ = 144170. Its totient is φ = 144168.

The previous prime is 144167. The next prime is 144173. The reversal of 144169 is 961441.

It can be divided in two parts, 144 and 169, that multiplied together give a square (24336 = 1562).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99225 + 44944 = 315^2 + 212^2 .

It is a cyclic number.

It is not a de Polignac number, because 144169 - 21 = 144167 is a prime.

It is a super-2 number, since 2×1441692 = 41569401122, which contains 22 as substring.

Together with 144167, it forms a pair of twin primes.

It is an Ulam number.

144169 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (144161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72084 + 72085.

It is an arithmetic number, because the mean of its divisors is an integer number (72085).

2144169 is an apocalyptic number.

It is an amenable number.

144169 is a deficient number, since it is larger than the sum of its proper divisors (1).

144169 is an equidigital number, since it uses as much as digits as its factorization.

144169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 144169 is about 379.6959309764. The cubic root of 144169 is about 52.4353247426.

The spelling of 144169 in words is "one hundred forty-four thousand, one hundred sixty-nine".