104312421 has 8 divisors (see below), whose sum is σ = 154536960. Its totient is φ = 69541596.

The previous prime is 104312407. The next prime is 104312423. The reversal of 104312421 is 124213401.

It is not a de Polignac number, because 104312421 - 2¹⁰ = 104311397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 104312394 and 104312403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104312423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1931685 + ... + 1931738.

It is an arithmetic number, because the mean of its divisors is an integer number (19317120).

Almost surely, 2^104312421 is an apocalyptic number.

It is an amenable number.

104312421 is a deficient number, since it is larger than the sum of its proper divisors (50224539).

104312421 is an equidigital number, since it uses as much as digits as its factorization.

104312421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3863432 (or 3863426 counting only the distinct ones).

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

The square root of 104312421 is about 10213.3452404195. The cubic root of 104312421 is about 470.7373682891.

Adding to 104312421 its reverse (124213401), we get a palindrome (228525822).

The spelling of 104312421 in words is "one hundred four million, three hundred twelve thousand, four hundred twenty-one".