1081090 has 8 divisors (see below), whose sum is σ = 1945980. Its totient is φ = 432432.

The previous prime is 1081079. The next prime is 1081097. The reversal of 1081090 is 901801.

It can be written as a sum of positive squares in 2 ways, for example, as 938961 + 142129 = 969^2 + 377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1081097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54045 + ... + 54064.

2^1081090 is an apocalyptic number.

1081090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1081090 is a deficient number, since it is larger than the sum of its proper divisors (864890).

1081090 is a wasteful number, since it uses less digits than its factorization.

1081090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108116.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1081090 is about 1039.7547787820. The cubic root of 1081090 is about 102.6330613763.

Adding to 1081090 its reverse (901801), we get a palindrome (1982891).

The spelling of 1081090 in words is "one million, eighty-one thousand, ninety".