1304410021 has 8 divisors (see below), whose sum is σ = 1373486400. Its totient is φ = 1235376000.

The previous prime is 1304410013. The next prime is 1304410049. The reversal of 1304410021 is 1200144031.

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 1304410021 - 2³ = 1304410013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1304409977 and 1304410004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304410421) 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, 67440 + ... + 84598.

It is an arithmetic number, because the mean of its divisors is an integer number (171685800).

Almost surely, 2^1304410021 is an apocalyptic number.

It is an amenable number.

1304410021 is a deficient number, since it is larger than the sum of its proper divisors (69076379).

1304410021 is a wasteful number, since it uses less digits than its factorization.

1304410021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21179.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1304410021 is about 36116.6169650481. The cubic root of 1304410021 is about 1092.6256095419.

Adding to 1304410021 its reverse (1200144031), we get a palindrome (2504554052).

The spelling of 1304410021 in words is "one billion, three hundred four million, four hundred ten thousand, twenty-one".