1125040 has 80 divisors (see below), whose sum is σ = 3124800. Its totient is φ = 376320.

The previous prime is 1125029. The next prime is 1125053. The reversal of 1125040 is 405211.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 1125040.

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, 27420 + ... + 27460.

It is an arithmetic number, because the mean of its divisors is an integer number (39060).

2^1125040 is an apocalyptic number.

1125040 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 1125040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1562400).

1125040 is an abundant number, since it is smaller than the sum of its proper divisors (1999760).

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

1125040 is an equidigital number, since it uses as much as digits as its factorization.

1125040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1125040 is about 1060.6790277930. The cubic root of 1125040 is about 104.0054237803.

The spelling of 1125040 in words is "one million, one hundred twenty-five thousand, forty".