1040000 has 80 divisors (see below), whose sum is σ = 2788170. Its totient is φ = 384000.

The previous prime is 1039999. The next prime is 1040021. The reversal of 1040000 is 401.

It can be written as a sum of positive squares in 5 ways, for example, as 7744 + 1032256 = 88^2 + 1016^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 79994 + ... + 80006.

2^1040000 is an apocalyptic number.

1040000 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 1040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1394085).

1040000 is an abundant number, since it is smaller than the sum of its proper divisors (1748170).

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

1040000 is an frugal number, since it uses more digits than its factorization.

1040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47 (or 20 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 1040000 is about 1019.8039027186. The cubic root of 1040000 is about 101.3159403820.

Adding to 1040000 its reverse (401), we get a palindrome (1040401).

The spelling of 1040000 in words is "one million, forty thousand".