145839 has 8 divisors (see below), whose sum is σ = 196272. Its totient is φ = 96320.

The previous prime is 145829. The next prime is 145861. The reversal of 145839 is 938541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145839 - 2⁴ = 145823 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379 + ... + 659.

It is an arithmetic number, because the mean of its divisors is an integer number (24534).

2¹⁴⁵⁸³⁹ is an apocalyptic number.

145839 is a deficient number, since it is larger than the sum of its proper divisors (50433).

145839 is a wasteful number, since it uses less digits than its factorization.

145839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its digits is 4320, while the sum is 30.

The square root of 145839 is about 381.8887272492. Note that the first 3 decimals coincide. The cubic root of 145839 is about 52.6370117374.

The spelling of 145839 in words is "one hundred forty-five thousand, eight hundred thirty-nine".