1125009 has 40 divisors (see below), whose sum is σ = 1916640. Its totient is φ = 653184.

The previous prime is 1125001. The next prime is 1125013. The reversal of 1125009 is 9005211.

1125009 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 1125009 - 2³ = 1125001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1124982 and 1125000.

It is not an unprimeable number, because it can be changed into a prime (1125001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26142 + ... + 26184.

It is an arithmetic number, because the mean of its divisors is an integer number (47916).

2^1125009 is an apocalyptic number.

1125009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1125009 is a deficient number, since it is larger than the sum of its proper divisors (791631).

1125009 is a wasteful number, since it uses less digits than its factorization.

1125009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1125009 is about 1060.6644144120. The cubic root of 1125009 is about 104.0044684964.

The spelling of 1125009 in words is "one million, one hundred twenty-five thousand, nine".