144260139 has 4 divisors (see below), whose sum is σ = 192346856. Its totient is φ = 96173424.

The previous prime is 144260131. The next prime is 144260159. The reversal of 144260139 is 931062441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931062441 = 3 ⋅310354147.

It is not a de Polignac number, because 144260139 - 2³ = 144260131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144260131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24043354 + ... + 24043359.

It is an arithmetic number, because the mean of its divisors is an integer number (48086714).

Almost surely, 2^144260139 is an apocalyptic number.

144260139 is a deficient number, since it is larger than the sum of its proper divisors (48086717).

144260139 is an equidigital number, since it uses as much as digits as its factorization.

144260139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48086716.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 144260139 is about 12010.8342341404. The cubic root of 144260139 is about 524.4637172311.

The spelling of 144260139 in words is "one hundred forty-four million, two hundred sixty thousand, one hundred thirty-nine".