104221406 has 4 divisors (see below), whose sum is σ = 156332112. Its totient is φ = 52110702.

The previous prime is 104221399. The next prime is 104221417. The reversal of 104221406 is 604122401.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26055350 + ... + 26055353.

It is an arithmetic number, because the mean of its divisors is an integer number (39083028).

Almost surely, 2^104221406 is an apocalyptic number.

104221406 is a deficient number, since it is larger than the sum of its proper divisors (52110706).

104221406 is an equidigital number, since it uses as much as digits as its factorization.

104221406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52110705.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 104221406 is about 10208.8885780970. Note that the first 3 decimals coincide. The cubic root of 104221406 is about 470.6004187036.

Adding to 104221406 its reverse (604122401), we get a palindrome (708343807).

The spelling of 104221406 in words is "one hundred four million, two hundred twenty-one thousand, four hundred six".