1125390 has 64 divisors (see below), whose sum is σ = 3234816. Its totient is φ = 244992.

The previous prime is 1125379. The next prime is 1125391. The reversal of 1125390 is 935211.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4714 + ... + 4946.

It is an arithmetic number, because the mean of its divisors is an integer number (50544).

2^1125390 is an apocalyptic number.

1125390 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 1125390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1617408).

1125390 is an abundant number, since it is smaller than the sum of its proper divisors (2109426).

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

1125390 is a wasteful number, since it uses less digits than its factorization.

1125390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 1125390 is about 1060.8440036122. The cubic root of 1125390 is about 104.0162080262.

The spelling of 1125390 in words is "one million, one hundred twenty-five thousand, three hundred ninety".