410001421 has 2 divisors, whose sum is σ = 410001422. Its totient is φ = 410001420.

The previous prime is 410001419. The next prime is 410001451. The reversal of 410001421 is 124100014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230736100 + 179265321 = 15190^2 + 13389^2 .

It is a cyclic number.

It is not a de Polignac number, because 410001421 - 2¹ = 410001419 is a prime.

Together with 410001419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (410001451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205000710 + 205000711.

It is an arithmetic number, because the mean of its divisors is an integer number (205000711).

Almost surely, 2^410001421 is an apocalyptic number.

It is an amenable number.

410001421 is a deficient number, since it is larger than the sum of its proper divisors (1).

410001421 is an equidigital number, since it uses as much as digits as its factorization.

410001421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 410001421 is about 20248.4918203801. The cubic root of 410001421 is about 742.8967423998.

Adding to 410001421 its reverse (124100014), we get a palindrome (534101435).

The spelling of 410001421 in words is "four hundred ten million, one thousand, four hundred twenty-one".