1091123 has 8 divisors (see below), whose sum is σ = 1197936. Its totient is φ = 985600.

The previous prime is 1091119. The next prime is 1091137. The reversal of 1091123 is 3211901.

It is a happy number.

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

It is not a de Polignac number, because 1091123 - 2² = 1091119 is a prime.

It is a super-2 number, since 2×1091123² = 2381098802258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1091173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2915 + ... + 3267.

It is an arithmetic number, because the mean of its divisors is an integer number (149742).

2^1091123 is an apocalyptic number.

1091123 is a deficient number, since it is larger than the sum of its proper divisors (106813).

1091123 is a wasteful number, since it uses less digits than its factorization.

1091123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1091123 is about 1044.5683318960. The cubic root of 1091123 is about 102.9495778593.

The spelling of 1091123 in words is "one million, ninety-one thousand, one hundred twenty-three".