104212123 has 4 divisors (see below), whose sum is σ = 104236000. Its totient is φ = 104188248.

The previous prime is 104212117. The next prime is 104212127. The reversal of 104212123 is 321212401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321212401 = 103 ⋅3118567.

It is a cyclic number.

It is not a de Polignac number, because 104212123 - 2¹⁷ = 104081051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104212097 and 104212106.

It is not an unprimeable number, because it can be changed into a prime (104212127) 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, 3315 + ... + 14812.

It is an arithmetic number, because the mean of its divisors is an integer number (26059000).

Almost surely, 2^104212123 is an apocalyptic number.

104212123 is a deficient number, since it is larger than the sum of its proper divisors (23877).

104212123 is an equidigital number, since it uses as much as digits as its factorization.

104212123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23876.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 104212123 is about 10208.4339151507. The cubic root of 104212123 is about 470.5864461632.

Adding to 104212123 its reverse (321212401), we get a palindrome (425424524).

It can be divided in two parts, 10421 and 2123, that added together give a square (12544 = 112²).

The spelling of 104212123 in words is "one hundred four million, two hundred twelve thousand, one hundred twenty-three".