1040490 has 48 divisors (see below), whose sum is σ = 2954016. Its totient is φ = 252000.

The previous prime is 1040489. The next prime is 1040503. The reversal of 1040490 is 940401.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 465 + ... + 1515.

It is an arithmetic number, because the mean of its divisors is an integer number (61542).

2^1040490 is an apocalyptic number.

1040490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1040490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1477008).

1040490 is an abundant number, since it is smaller than the sum of its proper divisors (1913526).

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

1040490 is a wasteful number, since it uses less digits than its factorization.

1040490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 1072 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1040490 is about 1020.0441166930. The cubic root of 1040490 is about 101.3318496820.

Adding to 1040490 its reverse (940401), we get a palindrome (1980891).

The spelling of 1040490 in words is "one million, forty thousand, four hundred ninety".