1040040 has 96 divisors (see below), whose sum is σ = 3538080. Its totient is φ = 274752.

The previous prime is 1040029. The next prime is 1040051. The reversal of 1040040 is 400401.

It is an interprime number because it is at equal distance from previous prime (1040029) and next prime (1040051).

It is a Harshad number since it is a multiple of its sum of digits (9).

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 (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9667 + ... + 9773.

It is an arithmetic number, because the mean of its divisors is an integer number (36855).

2^1040040 is an apocalyptic number.

1040040 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 1040040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1769040).

1040040 is an abundant number, since it is smaller than the sum of its proper divisors (2498040).

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

1040040 is a wasteful number, since it uses less digits than its factorization.

1040040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1040040 is about 1019.8235141435. The cubic root of 1040040 is about 101.3172392877.

Adding to 1040040 its reverse (400401), we get a palindrome (1440441).

It can be divided in two parts, 10400 and 40, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 1040040 in words is "one million, forty thousand, forty".