1125408 has 48 divisors (see below), whose sum is σ = 3114720. Its totient is φ = 354816.

The previous prime is 1125407. The next prime is 1125419. The reversal of 1125408 is 8045211.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1125401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1516 + ... + 2132.

It is an arithmetic number, because the mean of its divisors is an integer number (64890).

2^1125408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1557360).

1125408 is an abundant number, since it is smaller than the sum of its proper divisors (1989312).

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

1125408 is a wasteful number, since it uses less digits than its factorization.

1125408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1125408 is about 1060.8524873893. The cubic root of 1125408 is about 104.0167625841.

The spelling of 1125408 in words is "one million, one hundred twenty-five thousand, four hundred eight".