1125840 has 40 divisors (see below), whose sum is σ = 3490848. Its totient is φ = 300160.

The previous prime is 1125833. The next prime is 1125857. The reversal of 1125840 is 485211.

1125840 is nontrivially palindromic in base 14.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2106 + ... + 2585.

2^1125840 is an apocalyptic number.

1125840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125840 is an abundant number, since it is smaller than the sum of its proper divisors (2365008).

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

1125840 is a wasteful number, since it uses less digits than its factorization.

1125840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4707 (or 4701 counting only the distinct ones).

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

The square root of 1125840 is about 1061.0560776886. The cubic root of 1125840 is about 104.0300702002.

The spelling of 1125840 in words is "one million, one hundred twenty-five thousand, eight hundred forty".