144187 has 4 divisors (see below), whose sum is σ = 150480. Its totient is φ = 137896.

The previous prime is 144173. The next prime is 144203. The reversal of 144187 is 781441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 781441 = 173 ⋅4517.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144187 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (144167) 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, 3112 + ... + 3157.

It is an arithmetic number, because the mean of its divisors is an integer number (37620).

2¹⁴⁴¹⁸⁷ is an apocalyptic number.

144187 is a deficient number, since it is larger than the sum of its proper divisors (6293).

144187 is an equidigital number, since it uses as much as digits as its factorization.

144187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6292.

The product of its digits is 896, while the sum is 25.

The square root of 144187 is about 379.7196334139. The cubic root of 144187 is about 52.4375068959.

The spelling of 144187 in words is "one hundred forty-four thousand, one hundred eighty-seven".