104134021 has 4 divisors (see below), whose sum is σ = 106948492. Its totient is φ = 101319552.

The previous prime is 104134001. The next prime is 104134033. The reversal of 104134021 is 120431401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120431401 = 2203 ⋅54667.

It can be written as a sum of positive squares in 2 ways, for example, as 38750625 + 65383396 = 6225^2 + 8086^2 .

It is a cyclic number.

It is not a de Polignac number, because 104134021 - 2¹³ = 104125829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104133986 and 104134004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104134001) 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, 1407180 + ... + 1407253.

It is an arithmetic number, because the mean of its divisors is an integer number (26737123).

Almost surely, 2^104134021 is an apocalyptic number.

It is an amenable number.

104134021 is a deficient number, since it is larger than the sum of its proper divisors (2814471).

104134021 is an equidigital number, since it uses as much as digits as its factorization.

104134021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814470.

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

The square root of 104134021 is about 10204.6078317591. The cubic root of 104134021 is about 470.4688561071.

Adding to 104134021 its reverse (120431401), we get a palindrome (224565422).

The spelling of 104134021 in words is "one hundred four million, one hundred thirty-four thousand, twenty-one".