1191125 has 16 divisors (see below), whose sum is σ = 1603056. Its totient is φ = 878400.

The previous prime is 1191119. The next prime is 1191131. The reversal of 1191125 is 5211911.

It is an interprime number because it is at equal distance from previous prime (1191119) and next prime (1191131).

It can be written as a sum of positive squares in 8 ways, for example, as 256036 + 935089 = 506^2 + 967^2 .

It is not a de Polignac number, because 1191125 - 2⁴ = 1191109 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1191097 and 1191106.

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, 1259 + ... + 1991.

It is an arithmetic number, because the mean of its divisors is an integer number (100191).

2^1191125 is an apocalyptic number.

It is an amenable number.

1191125 is a deficient number, since it is larger than the sum of its proper divisors (411931).

1191125 is an equidigital number, since it uses as much as digits as its factorization.

1191125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 751 counting only the distinct ones).

The product of its digits is 90, while the sum is 20.

The square root of 1191125 is about 1091.3867325563. The cubic root of 1191125 is about 106.0032335551.

The spelling of 1191125 in words is "one million, one hundred ninety-one thousand, one hundred twenty-five".