1125540 has 108 divisors (see below), whose sum is σ = 3796884. Its totient is φ = 269568.

The previous prime is 1125539. The next prime is 1125557. The reversal of 1125540 is 455211.

1125540 is a `hidden beast` number, since 1 + 125 + 540 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 60516 + 1065024 = 246^2 + 1032^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 30402 + ... + 30438.

2^1125540 is an apocalyptic number.

1125540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1898442).

1125540 is an abundant number, since it is smaller than the sum of its proper divisors (2671344).

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

1125540 is a wasteful number, since it uses less digits than its factorization.

1125540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1125540 is about 1060.9146996814. The cubic root of 1125540 is about 104.0208291614.

The spelling of 1125540 in words is "one million, one hundred twenty-five thousand, five hundred forty".