144091 has 4 divisors (see below), whose sum is σ = 145800. Its totient is φ = 142384.

The previous prime is 144073. The next prime is 144103. The reversal of 144091 is 190441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190441 = 157 ⋅1213.

It is a cyclic number.

It is not a de Polignac number, because 144091 - 2¹³ = 135899 is a prime.

It is a Duffinian number.

144091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (144031) 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, 721 + ... + 898.

It is an arithmetic number, because the mean of its divisors is an integer number (36450).

2¹⁴⁴⁰⁹¹ is an apocalyptic number.

144091 is a deficient number, since it is larger than the sum of its proper divisors (1709).

144091 is an equidigital number, since it uses as much as digits as its factorization.

144091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708.

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

The square root of 144091 is about 379.5932033111. The cubic root of 144091 is about 52.4258666456.

The spelling of 144091 in words is "one hundred forty-four thousand, ninety-one".