1099141 has 4 divisors (see below), whose sum is σ = 1102284.
Its totient is φ = 1096000.
The previous prime is 1099139. The next prime is 1099171. The reversal of 1099141 is 1419901.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 801025 + 298116 = 895^2 + 546^2
It is a cyclic number.
It is not a de Polignac number, because 1099141 - 21 = 1099139 is a prime.
It is a super-2 number, since 2×10991412 = 2416221875762, which contains 22 as substring.
It is a Duffinian number.
1099141 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1099121) 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, 970 + ... + 1771.
It is an arithmetic number, because the mean of its divisors is an integer number (275571).
21099141 is an apocalyptic number.
It is an amenable number.
1099141 is a deficient number, since it is larger than the sum of its proper divisors (3143).
1099141 is an equidigital number, since it uses as much as digits as its factorization.
1099141 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3142.
The product of its (nonzero) digits is 324, while the sum is 25.
The square root of 1099141 is about 1048.3992560089.
The cubic root of 1099141 is about 103.2011339839.
The spelling of 1099141 in words is "one million, ninety-nine thousand, one hundred forty-one".