1205310045 has 16 divisors (see below), whose sum is σ = 1934704512. Its totient is φ = 640762560.

The previous prime is 1205309999. The next prime is 1205310061. The reversal of 1205310045 is 5400135021.

It is not a de Polignac number, because 1205310045 - 2¹² = 1205305949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124522 + ... + 133851.

It is an arithmetic number, because the mean of its divisors is an integer number (120919032).

Almost surely, 2^1205310045 is an apocalyptic number.

1205310045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1205310045 is a deficient number, since it is larger than the sum of its proper divisors (729394467).

1205310045 is a wasteful number, since it uses less digits than its factorization.

1205310045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258692.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1205310045 is about 34717.5754481790. The cubic root of 1205310045 is about 1064.2236975366.

Adding to 1205310045 its reverse (5400135021), we get a palindrome (6605445066).

The spelling of 1205310045 in words is "one billion, two hundred five million, three hundred ten thousand, forty-five".