104840421 has 8 divisors (see below), whose sum is σ = 159756864. Its totient is φ = 59908800.

The previous prime is 104840389. The next prime is 104840431. The reversal of 104840421 is 124048401.

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

It is not a de Polignac number, because 104840421 - 2⁵ = 104840389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 104840391 and 104840400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104840431) 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, 2496180 + ... + 2496221.

It is an arithmetic number, because the mean of its divisors is an integer number (19969608).

Almost surely, 2^104840421 is an apocalyptic number.

It is an amenable number.

104840421 is a deficient number, since it is larger than the sum of its proper divisors (54916443).

104840421 is an equidigital number, since it uses as much as digits as its factorization.

104840421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992411.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 104840421 is about 10239.1611472815. The cubic root of 104840421 is about 471.5302784757.

Adding to 104840421 its reverse (124048401), we get a palindrome (228888822).

The spelling of 104840421 in words is "one hundred four million, eight hundred forty thousand, four hundred twenty-one".