148145 has 4 divisors (see below), whose sum is σ = 177780. Its totient is φ = 118512.

The previous prime is 148139. The next prime is 148147. The reversal of 148145 is 541841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541841 = 17 ⋅31873.

It can be written as a sum of positive squares in 2 ways, for example, as 97969 + 50176 = 313^2 + 224^2 .

It is a cyclic number.

It is not a de Polignac number, because 148145 - 2¹⁶ = 82609 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 148145.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 148145.

It is not an unprimeable number, because it can be changed into a prime (148147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14810 + ... + 14819.

It is an arithmetic number, because the mean of its divisors is an integer number (44445).

2¹⁴⁸¹⁴⁵ is an apocalyptic number.

It is an amenable number.

148145 is a deficient number, since it is larger than the sum of its proper divisors (29635).

148145 is an equidigital number, since it uses as much as digits as its factorization.

148145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29634.

The product of its digits is 640, while the sum is 23.

The square root of 148145 is about 384.8960898736. The cubic root of 148145 is about 52.9129935933.

Adding to 148145 its product of digits (640), we get a triangular number (148785 = T₅₄₅).

Adding to 148145 its reverse (541841), we get a palindrome (689986).

The spelling of 148145 in words is "one hundred forty-eight thousand, one hundred forty-five".