1641123 has 24 divisors (see below), whose sum is σ = 2626416. Its totient is φ = 987360.

The previous prime is 1641103. The next prime is 1641131. The reversal of 1641123 is 3211461.

It is a happy number.

1641123 is a `hidden beast` number, since 1 + 641 + 1 + 23 = 666.

It is not a de Polignac number, because 1641123 - 2⁵ = 1641091 is a prime.

It is a super-2 number, since 2×1641123² = 5386569402258, which contains 22 as substring.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1641096 and 1641105.

It is not an unprimeable number, because it can be changed into a prime (1641103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11911 + ... + 12047.

It is an arithmetic number, because the mean of its divisors is an integer number (109434).

2^1641123 is an apocalyptic number.

1641123 is a deficient number, since it is larger than the sum of its proper divisors (985293).

1641123 is a wasteful number, since it uses less digits than its factorization.

1641123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 151 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1641123 is about 1281.0632302896. The cubic root of 1641123 is about 117.9542818199.

Adding to 1641123 its reverse (3211461), we get a palindrome (4852584).

It can be divided in two parts, 1641 and 123, that added together give a square (1764 = 42²).

The spelling of 1641123 in words is "one million, six hundred forty-one thousand, one hundred twenty-three".