1205045 has 8 divisors (see below), whose sum is σ = 1531224. Its totient is φ = 907264.

The previous prime is 1205027. The next prime is 1205047. The reversal of 1205045 is 5405021.

It can be written as a sum of positive squares in 4 ways, for example, as 654481 + 550564 = 809^2 + 742^2 .

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 1205045 - 2⁶ = 1204981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7004 + ... + 7173.

It is an arithmetic number, because the mean of its divisors is an integer number (191403).

2^1205045 is an apocalyptic number.

It is an amenable number.

1205045 is a deficient number, since it is larger than the sum of its proper divisors (326179).

1205045 is a wasteful number, since it uses less digits than its factorization.

1205045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14199.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1205045 is about 1097.7454167520. The cubic root of 1205045 is about 106.4145685009.

The spelling of 1205045 in words is "one million, two hundred five thousand, forty-five".