1125099 has 12 divisors (see below), whose sum is σ = 1638000. Its totient is φ = 744144.

The previous prime is 1125097. The next prime is 1125109. The reversal of 1125099 is 9905211.

1125099 = 117² + 118² + ... + 170².

It is a happy number.

It is not a de Polignac number, because 1125099 - 2¹ = 1125097 is a prime.

1125099 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1125097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 922 + ... + 1760.

It is an arithmetic number, because the mean of its divisors is an integer number (136500).

2^1125099 is an apocalyptic number.

1125099 is a deficient number, since it is larger than the sum of its proper divisors (512901).

1125099 is a wasteful number, since it uses less digits than its factorization.

1125099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 1125099 is about 1060.7068398007. The cubic root of 1125099 is about 104.0072418527.

The spelling of 1125099 in words is "one million, one hundred twenty-five thousand, ninety-nine".