1091141 has 4 divisors (see below), whose sum is σ = 1094400. Its totient is φ = 1087884.

The previous prime is 1091137. The next prime is 1091147. The reversal of 1091141 is 1411901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1091141 - 2² = 1091137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091147) 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, 1061 + ... + 1818.

It is an arithmetic number, because the mean of its divisors is an integer number (273600).

2^1091141 is an apocalyptic number.

It is an amenable number.

1091141 is a deficient number, since it is larger than the sum of its proper divisors (3259).

1091141 is an equidigital number, since it uses as much as digits as its factorization.

1091141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 1091141 is about 1044.5769478598. The cubic root of 1091141 is about 102.9501439679.

The spelling of 1091141 in words is "one million, ninety-one thousand, one hundred forty-one".