1305073 has 16 divisors (see below), whose sum is σ = 1724544. Its totient is φ = 956160.

The previous prime is 1305061. The next prime is 1305097. The reversal of 1305073 is 3705031.

1305073 = T₃₄₂ + T₃₄₃ + ... + T₃₆₂.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1305073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1305073.

It is not an unprimeable number, because it can be changed into a prime (1305013) 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 15 ways as a sum of consecutive naturals, for example, 811 + ... + 1807.

It is an arithmetic number, because the mean of its divisors is an integer number (107784).

2^1305073 is an apocalyptic number.

It is an amenable number.

1305073 is a deficient number, since it is larger than the sum of its proper divisors (419471).

1305073 is a wasteful number, since it uses less digits than its factorization.

1305073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032.

The product of its (nonzero) digits is 315, while the sum is 19.

The square root of 1305073 is about 1142.3979166648. The cubic root of 1305073 is about 109.2810690698.

The spelling of 1305073 in words is "one million, three hundred five thousand, seventy-three".