1125450 has 72 divisors (see below), whose sum is σ = 3148236. Its totient is φ = 288000.

The previous prime is 1125433. The next prime is 1125469. The reversal of 1125450 is 545211.

It can be written as a sum of positive squares in 6 ways, for example, as 3969 + 1121481 = 63^2 + 1059^2 .

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

It is a Curzon number.

It is a congruent number.

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, 18420 + ... + 18480.

2^1125450 is an apocalyptic number.

1125450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1574118).

1125450 is an abundant number, since it is smaller than the sum of its proper divisors (2022786).

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

1125450 is a wasteful number, since it uses less digits than its factorization.

1125450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 112 counting only the distinct ones).

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

The square root of 1125450 is about 1060.8722826052. The cubic root of 1125450 is about 104.0180565295.

The spelling of 1125450 in words is "one million, one hundred twenty-five thousand, four hundred fifty".