1200171005 has 16 divisors (see below), whose sum is σ = 1653825600. Its totient is φ = 826911360.

The previous prime is 1200170971. The next prime is 1200171017. The reversal of 1200171005 is 5001710021.

It is not a de Polignac number, because 1200171005 - 2⁶ = 1200170941 is a prime.

It is a Curzon number.

It is a congruent number.

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, 573200 + ... + 575289.

It is an arithmetic number, because the mean of its divisors is an integer number (103364100).

Almost surely, 2^1200171005 is an apocalyptic number.

It is an amenable number.

1200171005 is a deficient number, since it is larger than the sum of its proper divisors (453654595).

1200171005 is a wasteful number, since it uses less digits than its factorization.

1200171005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148524.

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 1200171005 is about 34643.4843080196. The cubic root of 1200171005 is about 1062.7090445430.

Adding to 1200171005 its reverse (5001710021), we get a palindrome (6201881026).

The spelling of 1200171005 in words is "one billion, two hundred million, one hundred seventy-one thousand, five".