104243121 has 12 divisors (see below), whose sum is σ = 150662772. Its totient is φ = 69454176.

The previous prime is 104243059. The next prime is 104243143. The reversal of 104243121 is 121342401.

It can be written as a sum of positive squares in 2 ways, for example, as 51840000 + 52403121 = 7200^2 + 7239^2 .

It is not a de Polignac number, because 104243121 - 2⁷ = 104242993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 104243094 and 104243103.

It is not an unprimeable number, because it can be changed into a prime (104243021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24655 + ... + 28571.

It is an arithmetic number, because the mean of its divisors is an integer number (12555231).

Almost surely, 2^104243121 is an apocalyptic number.

It is an amenable number.

104243121 is a deficient number, since it is larger than the sum of its proper divisors (46419651).

104243121 is a wasteful number, since it uses less digits than its factorization.

104243121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6880 (or 6877 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 104243121 is about 10209.9520566945. The cubic root of 104243121 is about 470.6331003405.

Adding to 104243121 its reverse (121342401), we get a palindrome (225585522).

The spelling of 104243121 in words is "one hundred four million, two hundred forty-three thousand, one hundred twenty-one".