144039 has 16 divisors (see below), whose sum is σ = 231680. Its totient is φ = 77976.

The previous prime is 144037. The next prime is 144061. The reversal of 144039 is 930441.

144039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144039 - 2¹ = 144037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

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 144039.

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 15 ways as a sum of consecutive naturals, for example, 7572 + ... + 7590.

It is an arithmetic number, because the mean of its divisors is an integer number (14480).

2¹⁴⁴⁰³⁹ is an apocalyptic number.

144039 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

144039 is a deficient number, since it is larger than the sum of its proper divisors (87641).

144039 is an frugal number, since it uses more digits than its factorization.

144039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 144039 is about 379.5247027533. The cubic root of 144039 is about 52.4195593512.

144039 divided by its sum of digits (21) gives a cube (6859 = 19³).

The spelling of 144039 in words is "one hundred forty-four thousand, thirty-nine".