145020 has 24 divisors (see below), whose sum is σ = 406224. Its totient is φ = 38656.

The previous prime is 145009. The next prime is 145021. The reversal of 145020 is 20541.

145020 = T₁₇₅ + T₁₇₆ + ... + T₁₈₃.

145020 is nontrivially palindromic in base 13.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 144987 and 145005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145021) by changing a digit.

145020 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1149 + ... + 1268.

It is an arithmetic number, because the mean of its divisors is an integer number (16926).

2¹⁴⁵⁰²⁰ is an apocalyptic number.

145020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145020 is an abundant number, since it is smaller than the sum of its proper divisors (261204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145020 is a wasteful number, since it uses less digits than its factorization.

145020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429 (or 2427 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 145020 is about 380.8149156743. The cubic root of 145020 is about 52.5382940566.

Adding to 145020 its reverse (20541), we get a palindrome (165561).

The spelling of 145020 in words is "one hundred forty-five thousand, twenty".