1205455012 has 12 divisors (see below), whose sum is σ = 2110476060. Its totient is φ = 602461856.

The previous prime is 1205454979. The next prime is 1205455049. The reversal of 1205455012 is 2105545021.

It can be written as a sum of positive squares in 2 ways, for example, as 1132591716 + 72863296 = 33654^2 + 8536^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56023 + ... + 74494.

It is an arithmetic number, because the mean of its divisors is an integer number (175873005).

Almost surely, 2^1205455012 is an apocalyptic number.

It is an amenable number.

1205455012 is a deficient number, since it is larger than the sum of its proper divisors (905021048).

1205455012 is a wasteful number, since it uses less digits than its factorization.

1205455012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132830 (or 132828 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1205455012 is about 34719.6631896106. The cubic root of 1205455012 is about 1064.2663618377.

Subtracting 1205455012 from its reverse (2105545021), we obtain a palindrome (900090009).

The spelling of 1205455012 in words is "one billion, two hundred five million, four hundred fifty-five thousand, twelve".