104212421 has 8 divisors (see below), whose sum is σ = 107692800. Its totient is φ = 100739520.

The previous prime is 104212417. The next prime is 104212429. The reversal of 104212421 is 124212401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 104212421 - 2² = 104212417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104212421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104212429) 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, 47885 + ... + 50013.

It is an arithmetic number, because the mean of its divisors is an integer number (13461600).

Almost surely, 2^104212421 is an apocalyptic number.

It is an amenable number.

104212421 is a deficient number, since it is larger than the sum of its proper divisors (3480379).

104212421 is a wasteful number, since it uses less digits than its factorization.

104212421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3739.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 104212421 is about 10208.4485109149. The cubic root of 104212421 is about 470.5868947183.

Adding to 104212421 its reverse (124212401), we get a palindrome (228424822).

The spelling of 104212421 in words is "one hundred four million, two hundred twelve thousand, four hundred twenty-one".