1421304401 has 16 divisors (see below), whose sum is σ = 1593297216. Its totient is φ = 1256640000.

The previous prime is 1421304361. The next prime is 1421304403. The reversal of 1421304401 is 1044031241.

It is a de Polignac number, because none of the positive numbers 2^k-1421304401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1421304403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144521 + ... + 154041.

It is an arithmetic number, because the mean of its divisors is an integer number (99581076).

Almost surely, 2^1421304401 is an apocalyptic number.

1421304401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1421304401 is a deficient number, since it is larger than the sum of its proper divisors (171992815).

1421304401 is a wasteful number, since it uses less digits than its factorization.

1421304401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9904.

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

The square root of 1421304401 is about 37700.1909942112. The cubic root of 1421304401 is about 1124.3349223865.

Adding to 1421304401 its reverse (1044031241), we get a palindrome (2465335642).

The spelling of 1421304401 in words is "one billion, four hundred twenty-one million, three hundred four thousand, four hundred one".