Search a number
-
+
144901 = 473083
BaseRepresentation
bin100011011000000101
321100202201
4203120011
514114101
63034501
71142311
oct433005
9240681
10144901
1199959
126ba31
1350c53
143ab41
152ce01
hex23605

144901 has 4 divisors (see below), whose sum is σ = 148032. Its totient is φ = 141772.

The previous prime is 144899. The next prime is 144917. The reversal of 144901 is 109441.

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 144901 - 21 = 144899 is a prime.

It is a Duffinian number.

144901 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1495 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (37008).

2144901 is an apocalyptic number.

It is an amenable number.

144901 is a deficient number, since it is larger than the sum of its proper divisors (3131).

144901 is an equidigital number, since it uses as much as digits as its factorization.

144901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3130.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 144901 is about 380.6586397286. The cubic root of 144901 is about 52.5239195614.

The spelling of 144901 in words is "one hundred forty-four thousand, nine hundred one".

Divisors: 1 47 3083 144901