1125750 has 64 divisors (see below), whose sum is σ = 2995200. Its totient is φ = 280800.

The previous prime is 1125739. The next prime is 1125763. The reversal of 1125750 is 575211.

1125750 is a nontrivial binomial coefficient, being equal to C(1501, 2).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 14211 + ... + 14289.

It is an arithmetic number, because the mean of its divisors is an integer number (46800).

2^1125750 is an apocalyptic number.

1125750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1125750 is the 1500-th triangular number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1497600).

1125750 is an abundant number, since it is smaller than the sum of its proper divisors (1869450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1125750 is a wasteful number, since it uses less digits than its factorization.

1125750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 1125750 is about 1061.0136662645. The cubic root of 1125750 is about 104.0272980610.

It can be divided in two parts, 1 and 125750, that added together give a triangular number (125751 = T₅₀₁).

The spelling of 1125750 in words is "one million, one hundred twenty-five thousand, seven hundred fifty".