2091123 has 16 divisors (see below), whose sum is σ = 3175200. Its totient is φ = 1359360.

The previous prime is 2091097. The next prime is 2091139. The reversal of 2091123 is 3211902.

It is a happy number.

It is not a de Polignac number, because 2091123 - 2¹² = 2087027 is a prime.

It is a super-2 number, since 2×2091123² = 8745590802258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2091096 and 2091105.

It is not an unprimeable number, because it can be changed into a prime (2091623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163 + ... + 2051.

It is an arithmetic number, because the mean of its divisors is an integer number (198450).

2^2091123 is an apocalyptic number.

2091123 is a deficient number, since it is larger than the sum of its proper divisors (1084077).

2091123 is a wasteful number, since it uses less digits than its factorization.

2091123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939 (or 1933 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 2091123 is about 1446.0715749921. The cubic root of 2091123 is about 127.8772219495.

The spelling of 2091123 in words is "two million, ninety-one thousand, one hundred twenty-three".