145071 has 14 divisors (see below), whose sum is σ = 218600. Its totient is φ = 96228.

The previous prime is 145069. The next prime is 145091. The reversal of 145071 is 170541.

It is not a de Polignac number, because 145071 - 2¹ = 145069 is a prime.

It is a Duffinian number.

145071 is a lucky number.

It is a plaindrome in base 16.

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 145071.

It is not an unprimeable number, because it can be changed into a prime (145021) 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 13 ways as a sum of consecutive naturals, for example, 630 + ... + 828.

2¹⁴⁵⁰⁷¹ is an apocalyptic number.

145071 is a deficient number, since it is larger than the sum of its proper divisors (73529).

145071 is an frugal number, since it uses more digits than its factorization.

145071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 145071 is about 380.8818714510. The cubic root of 145071 is about 52.5444521473.

It can be divided in two parts, 1450 and 71, that added together give a square (1521 = 39²).

The spelling of 145071 in words is "one hundred forty-five thousand, seventy-one".