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144149 = 473067
BaseRepresentation
bin100011001100010101
321022201212
4203030111
514103044
63031205
71140155
oct431425
9238655
10144149
1199335
126b505
13507c5
143a765
152ca9e
hex23315

144149 has 4 divisors (see below), whose sum is σ = 147264. Its totient is φ = 141036.

The previous prime is 144139. The next prime is 144161. The reversal of 144149 is 941441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144149 - 212 = 140053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144139) 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, 1487 + ... + 1580.

It is an arithmetic number, because the mean of its divisors is an integer number (36816).

2144149 is an apocalyptic number.

It is an amenable number.

144149 is a deficient number, since it is larger than the sum of its proper divisors (3115).

144149 is an equidigital number, since it uses as much as digits as its factorization.

144149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114.

The product of its digits is 576, while the sum is 23.

The square root of 144149 is about 379.6695931991. The cubic root of 144149 is about 52.4328999148.

The spelling of 144149 in words is "one hundred forty-four thousand, one hundred forty-nine".

Divisors: 1 47 3067 144149