1200115 has 16 divisors (see below), whose sum is σ = 1743552. Its totient is φ = 774144.

The previous prime is 1200109. The next prime is 1200139. The reversal of 1200115 is 5110021.

It is a happy number.

It is not a de Polignac number, because 1200115 - 2⁵ = 1200083 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 414 + ... + 1603.

It is an arithmetic number, because the mean of its divisors is an integer number (108972).

2^1200115 is an apocalyptic number.

1200115 is a deficient number, since it is larger than the sum of its proper divisors (543437).

1200115 is a wasteful number, since it uses less digits than its factorization.

1200115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 1200115 is about 1095.4976038312. The cubic root of 1200115 is about 106.2692514136.

Adding to 1200115 its reverse (5110021), we get a palindrome (6310136).

The spelling of 1200115 in words is "one million, two hundred thousand, one hundred fifteen".