1039040 has 56 divisors (see below), whose sum is σ = 2633472. Its totient is φ = 389120.

The previous prime is 1039039. The next prime is 1039043. The reversal of 1039040 is 409301.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (1039043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5345 + ... + 5535.

2^1039040 is an apocalyptic number.

1039040 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 1039040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1316736).

1039040 is an abundant number, since it is smaller than the sum of its proper divisors (1594432).

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

1039040 is a wasteful number, since it uses less digits than its factorization.

1039040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1039040 is about 1019.3331153259. Note that the first 3 decimals coincide. The cubic root of 1039040 is about 101.2847566496.

The spelling of 1039040 in words is "one million, thirty-nine thousand, forty".