1245009 has 8 divisors (see below), whose sum is σ = 1668352. Its totient is φ = 825840.

The previous prime is 1245001. The next prime is 1245017. The reversal of 1245009 is 9005421.

It is an interprime number because it is at equal distance from previous prime (1245001) and next prime (1245017).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1245009 - 2³ = 1245001 is a prime.

It is a Duffinian number.

1245009 is a lucky number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1245001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262 + ... + 1599.

It is an arithmetic number, because the mean of its divisors is an integer number (208544).

2^1245009 is an apocalyptic number.

It is an amenable number.

1245009 is a deficient number, since it is larger than the sum of its proper divisors (423343).

1245009 is a wasteful number, since it uses less digits than its factorization.

1245009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1245009 is about 1115.7997132102. The cubic root of 1245009 is about 107.5781728135.

The spelling of 1245009 in words is "one million, two hundred forty-five thousand, nine".