145041305 has 4 divisors (see below), whose sum is σ = 174049572. Its totient is φ = 116033040.

The previous prime is 145041257. The next prime is 145041311. The reversal of 145041305 is 503140541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503140541 = 37 ⋅13598393.

It can be written as a sum of positive squares in 2 ways, for example, as 80335369 + 64705936 = 8963^2 + 8044^2 .

It is not a de Polignac number, because 145041305 - 2⁸ = 145041049 is a prime.

It is a super-2 number, since 2×145041305² = 42073960312206050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14504126 + ... + 14504135.

It is an arithmetic number, because the mean of its divisors is an integer number (43512393).

Almost surely, 2^145041305 is an apocalyptic number.

It is an amenable number.

145041305 is a deficient number, since it is larger than the sum of its proper divisors (29008267).

145041305 is an equidigital number, since it uses as much as digits as its factorization.

145041305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29008266.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 145041305 is about 12043.3095534409. The cubic root of 145041305 is about 525.4086674436.

Adding to 145041305 its reverse (503140541), we get a palindrome (648181846).

The spelling of 145041305 in words is "one hundred forty-five million, forty-one thousand, three hundred five".