421310401 has 2 divisors, whose sum is σ = 421310402. Its totient is φ = 421310400.

The previous prime is 421310399. The next prime is 421310413. The reversal of 421310401 is 104013124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258084225 + 163226176 = 16065^2 + 12776^2 .

It is a cyclic number.

It is not a de Polignac number, because 421310401 - 2¹ = 421310399 is a prime.

Together with 421310399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (421310441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210655200 + 210655201.

It is an arithmetic number, because the mean of its divisors is an integer number (210655201).

Almost surely, 2^421310401 is an apocalyptic number.

It is an amenable number.

421310401 is a deficient number, since it is larger than the sum of its proper divisors (1).

421310401 is an equidigital number, since it uses as much as digits as its factorization.

421310401 is an odious number, because the sum of its binary digits is odd.

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

The square root of 421310401 is about 20525.8471445151. The cubic root of 421310401 is about 749.6652734479.

Adding to 421310401 its reverse (104013124), we get a palindrome (525323525).

The spelling of 421310401 in words is "four hundred twenty-one million, three hundred ten thousand, four hundred one".