146090305 has 4 divisors (see below), whose sum is σ = 175308372. Its totient is φ = 116872240.

The previous prime is 146090293. The next prime is 146090309. The reversal of 146090305 is 503090641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503090641 = 3001 ⋅167641.

It can be written as a sum of positive squares in 2 ways, for example, as 76317696 + 69772609 = 8736^2 + 8353^2 .

It is not a de Polignac number, because 146090305 - 2⁷ = 146090177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146090309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14609026 + ... + 14609035.

It is an arithmetic number, because the mean of its divisors is an integer number (43827093).

Almost surely, 2^146090305 is an apocalyptic number.

It is an amenable number.

146090305 is a deficient number, since it is larger than the sum of its proper divisors (29218067).

146090305 is an equidigital number, since it uses as much as digits as its factorization.

146090305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29218066.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 146090305 is about 12086.7822434261. The cubic root of 146090305 is about 526.6722851419.

The spelling of 146090305 in words is "one hundred forty-six million, ninety thousand, three hundred five".