It is a tau number, because it is divible by the number of its divisors (80).
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145920.
It is an unprimeable number.
145920 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2145920 is an apocalyptic number.
145920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 145920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
145920 is an equidigital number, since it uses as much as digits as its factorization.
145920 is an odious number, because the sum of its binary digits is odd.
The square root of 145920 is about 381.9947643620. The cubic root of 145920 is about 52.6467549219.
The spelling of 145920 in words is "one hundred forty-five thousand, nine hundred twenty".