1080040 has 64 divisors (see below), whose sum is σ = 2741760. Its totient is φ = 380160.

The previous prime is 1080029. The next prime is 1080043. The reversal of 1080040 is 400801.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1080040.

It is not an unprimeable number, because it can be changed into a prime (1080043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16087 + ... + 16153.

It is an arithmetic number, because the mean of its divisors is an integer number (42840).

2^1080040 is an apocalyptic number.

1080040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1080040 is the 520-th decagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1080040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1370880).

1080040 is an abundant number, since it is smaller than the sum of its proper divisors (1661720).

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

1080040 is a wasteful number, since it uses less digits than its factorization.

1080040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1080040 is about 1039.2497293721. The cubic root of 1080040 is about 102.5998234338.

Adding to 1080040 its reverse (400801), we get a palindrome (1480841).

The spelling of 1080040 in words is "one million, eighty thousand, forty".