1200045051 has 24 divisors (see below), whose sum is σ = 1805207040. Its totient is φ = 796644072.

The previous prime is 1200045047. The next prime is 1200045101. The reversal of 1200045051 is 1505400021.

It is not a de Polignac number, because 1200045051 - 2² = 1200045047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200045151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47746 + ... + 68408.

It is an arithmetic number, because the mean of its divisors is an integer number (75216960).

Almost surely, 2^1200045051 is an apocalyptic number.

1200045051 is a deficient number, since it is larger than the sum of its proper divisors (605161989).

1200045051 is an equidigital number, since it uses as much as digits as its factorization.

1200045051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20917 (or 20905 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1200045051 is about 34641.6664004490. Note that the first 3 decimals coincide. The cubic root of 1200045051 is about 1062.6718673026.

Adding to 1200045051 its reverse (1505400021), we get a palindrome (2705445072).

The spelling of 1200045051 in words is "one billion, two hundred million, forty-five thousand, fifty-one".