145241 has 4 divisors (see below), whose sum is σ = 147684. Its totient is φ = 142800.

The previous prime is 145219. The next prime is 145253. The reversal of 145241 is 142541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1600 + 143641 = 40^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 145241 - 2⁶ = 145177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1130 + ... + 1251.

It is an arithmetic number, because the mean of its divisors is an integer number (36921).

2¹⁴⁵²⁴¹ is an apocalyptic number.

It is an amenable number.

145241 is a deficient number, since it is larger than the sum of its proper divisors (2443).

145241 is an equidigital number, since it uses as much as digits as its factorization.

145241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442.

The product of its digits is 160, while the sum is 17.

The square root of 145241 is about 381.1049724157. The cubic root of 145241 is about 52.5649686989.

Adding to 145241 its reverse (142541), we get a palindrome (287782).

The spelling of 145241 in words is "one hundred forty-five thousand, two hundred forty-one".