1309045 has 8 divisors (see below), whose sum is σ = 1639296. Its totient is φ = 1001616.

The previous prime is 1309039. The next prime is 1309057. The reversal of 1309045 is 5409031.

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

It is a cyclic number.

It is not a de Polignac number, because 1309045 - 2⁵ = 1309013 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5577 + ... + 5806.

It is an arithmetic number, because the mean of its divisors is an integer number (204912).

2^1309045 is an apocalyptic number.

It is an amenable number.

1309045 is a deficient number, since it is larger than the sum of its proper divisors (330251).

1309045 is a wasteful number, since it uses less digits than its factorization.

1309045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11411.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1309045 is about 1144.1350444768. The cubic root of 1309045 is about 109.3918227185.

The spelling of 1309045 in words is "one million, three hundred nine thousand, forty-five".