1200244545 has 12 divisors (see below), whose sum is σ = 2080423956. Its totient is φ = 640130400.

The previous prime is 1200244543. The next prime is 1200244603. The reversal of 1200244545 is 5454420021.

1200244545 is a `hidden beast` number, since 1 + 200 + 2 + 4 + 454 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 140351409 + 1059893136 = 11847^2 + 32556^2 .

It is not a de Polignac number, because 1200244545 - 2¹ = 1200244543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200244543) 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 11 ways as a sum of consecutive naturals, for example, 13336006 + ... + 13336095.

It is an arithmetic number, because the mean of its divisors is an integer number (173368663).

Almost surely, 2^1200244545 is an apocalyptic number.

1200244545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1200244545 is a deficient number, since it is larger than the sum of its proper divisors (880179411).

1200244545 is a wasteful number, since it uses less digits than its factorization.

1200244545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26672112 (or 26672109 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1200244545 is about 34644.5456746080. The cubic root of 1200244545 is about 1062.7307497907.

Adding to 1200244545 its reverse (5454420021), we get a palindrome (6654664566).

The spelling of 1200244545 in words is "one billion, two hundred million, two hundred forty-four thousand, five hundred forty-five".