1125861 has 16 divisors (see below), whose sum is σ = 1657920. Its totient is φ = 673920.

The previous prime is 1125857. The next prime is 1125871. The reversal of 1125861 is 1685211.

It is not a de Polignac number, because 1125861 - 2² = 1125857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125811) 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 15 ways as a sum of consecutive naturals, for example, 3441 + ... + 3753.

It is an arithmetic number, because the mean of its divisors is an integer number (103620).

2^1125861 is an apocalyptic number.

1125861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1125861 is a deficient number, since it is larger than the sum of its proper divisors (532059).

1125861 is a wasteful number, since it uses less digits than its factorization.

1125861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436.

The product of its digits is 480, while the sum is 24.

The square root of 1125861 is about 1061.0659734437. The cubic root of 1125861 is about 104.0307170115.

The spelling of 1125861 in words is "one million, one hundred twenty-five thousand, eight hundred sixty-one".