1009045 has 4 divisors (see below), whose sum is σ = 1210860. Its totient is φ = 807232.

The previous prime is 1009037. The next prime is 1009049. The reversal of 1009045 is 5409001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5409001 = 13 ⋅416077.

It can be written as a sum of positive squares in 2 ways, for example, as 432964 + 576081 = 658^2 + 759^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009045 - 2³ = 1009037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009049) 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, 100900 + ... + 100909.

It is an arithmetic number, because the mean of its divisors is an integer number (302715).

2^1009045 is an apocalyptic number.

It is an amenable number.

1009045 is a deficient number, since it is larger than the sum of its proper divisors (201815).

1009045 is an equidigital number, since it uses as much as digits as its factorization.

1009045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201814.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1009045 is about 1004.5123194864. The cubic root of 1009045 is about 100.3005955180.

The spelling of 1009045 in words is "one million, nine thousand, forty-five".