104021424 has 120 divisors (see below), whose sum is σ = 316267952. Its totient is φ = 31726080.

The previous prime is 104021417. The next prime is 104021431. The reversal of 104021424 is 424120401.

It is an interprime number because it is at equal distance from previous prime (104021417) and next prime (104021431).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 104021397 and 104021406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 338679 + ... + 338985.

Almost surely, 2^104021424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 104021424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158133976).

104021424 is an abundant number, since it is smaller than the sum of its proper divisors (212246528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

104021424 is a wasteful number, since it uses less digits than its factorization.

104021424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 104021424 is about 10199.0893711154. The cubic root of 104021424 is about 470.2992269901.

Adding to 104021424 its reverse (424120401), we get a palindrome (528141825).

The spelling of 104021424 in words is "one hundred four million, twenty-one thousand, four hundred twenty-four".