1145009 has 4 divisors (see below), whose sum is σ = 1194816. Its totient is φ = 1095204.

The previous prime is 1145003. The next prime is 1145021. The reversal of 1145009 is 9005411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1145009 - 2⁴ = 1144993 is a prime.

It is a super-2 number, since 2×1145009² = 2622091220162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145003) 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, 24869 + ... + 24914.

It is an arithmetic number, because the mean of its divisors is an integer number (298704).

2^1145009 is an apocalyptic number.

It is an amenable number.

1145009 is a deficient number, since it is larger than the sum of its proper divisors (49807).

1145009 is an equidigital number, since it uses as much as digits as its factorization.

1145009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49806.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1145009 is about 1070.0509333672. The cubic root of 1145009 is about 104.6171697665.

The spelling of 1145009 in words is "one million, one hundred forty-five thousand, nine".