145504239 has 16 divisors (see below), whose sum is σ = 203016672. Its totient is φ = 92596608.

The previous prime is 145504213. The next prime is 145504243. The reversal of 145504239 is 932405541.

It is not a de Polignac number, because 145504239 - 2¹¹ = 145502191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145504439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6484 + ... + 18249.

It is an arithmetic number, because the mean of its divisors is an integer number (12688542).

Almost surely, 2^145504239 is an apocalyptic number.

145504239 is a deficient number, since it is larger than the sum of its proper divisors (57512433).

145504239 is a wasteful number, since it uses less digits than its factorization.

145504239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24826.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 145504239 is about 12062.5137927382. The cubic root of 145504239 is about 525.9670629041.

The spelling of 145504239 in words is "one hundred forty-five million, five hundred four thousand, two hundred thirty-nine".