1200245105 has 16 divisors (see below), whose sum is σ = 1522747200. Its totient is φ = 905670720.

The previous prime is 1200245077. The next prime is 1200245113. The reversal of 1200245105 is 5015420021.

It is a de Polignac number, because none of the positive numbers 2^k-1200245105 is a prime.

It is a super-2 number, since 2×1200245105² = 2881176624152922050, which contains 22 as substring.

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, 5831 + ... + 49340.

It is an arithmetic number, because the mean of its divisors is an integer number (95171700).

Almost surely, 2^1200245105 is an apocalyptic number.

It is an amenable number.

1200245105 is a deficient number, since it is larger than the sum of its proper divisors (322502095).

1200245105 is a wasteful number, since it uses less digits than its factorization.

1200245105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55424.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1200245105 is about 34644.5537566874. The cubic root of 1200245105 is about 1062.7309150707.

Adding to 1200245105 its reverse (5015420021), we get a palindrome (6215665126).

The spelling of 1200245105 in words is "one billion, two hundred million, two hundred forty-five thousand, one hundred five".