1000145 has 4 divisors (see below), whose sum is σ = 1200180. Its totient is φ = 800112.

The previous prime is 1000133. The next prime is 1000151. The reversal of 1000145 is 5410001.

1000145 = T₆₃₀ + T₆₃₁ + ... + T₆₃₄.

1000145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5410001 = 449 ⋅12049.

It can be written as a sum of positive squares in 2 ways, for example, as 543169 + 456976 = 737^2 + 676^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000145 - 2⁶ = 1000081 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100010 + ... + 100019.

It is an arithmetic number, because the mean of its divisors is an integer number (300045).

2^1000145 is an apocalyptic number.

It is an amenable number.

1000145 is a deficient number, since it is larger than the sum of its proper divisors (200035).

1000145 is an equidigital number, since it uses as much as digits as its factorization.

1000145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200034.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1000145 is about 1000.0724973721. The cubic root of 1000145 is about 100.0048330997.

Adding to 1000145 its reverse (5410001), we get a palindrome (6410146).

The spelling of 1000145 in words is "one million, one hundred forty-five", and thus it is an aban number.