1200512445 has 16 divisors (see below), whose sum is σ = 2095440192. Its totient is φ = 582066560.

The previous prime is 1200512437. The next prime is 1200512447. The reversal of 1200512445 is 5442150021.

It is not a de Polignac number, because 1200512445 - 2³ = 1200512437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200512447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3637752 + ... + 3638081.

It is an arithmetic number, because the mean of its divisors is an integer number (130965012).

Almost surely, 2^1200512445 is an apocalyptic number.

1200512445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1200512445 is a deficient number, since it is larger than the sum of its proper divisors (894927747).

1200512445 is a wasteful number, since it uses less digits than its factorization.

1200512445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7275852.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1200512445 is about 34648.4118683671. The cubic root of 1200512445 is about 1062.8098126754.

Adding to 1200512445 its reverse (5442150021), we get a palindrome (6642662466).

The spelling of 1200512445 in words is "one billion, two hundred million, five hundred twelve thousand, four hundred forty-five".