421450411 has 2 divisors, whose sum is σ = 421450412. Its totient is φ = 421450410.

The previous prime is 421450409. The next prime is 421450481. The reversal of 421450411 is 114054124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421450411 - 2¹ = 421450409 is a prime.

Together with 421450409, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (421450481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210725205 + 210725206.

It is an arithmetic number, because the mean of its divisors is an integer number (210725206).

Almost surely, 2^421450411 is an apocalyptic number.

421450411 is a deficient number, since it is larger than the sum of its proper divisors (1).

421450411 is an equidigital number, since it uses as much as digits as its factorization.

421450411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 421450411 is about 20529.2574390795. The cubic root of 421450411 is about 749.7483072475.

The spelling of 421450411 in words is "four hundred twenty-one million, four hundred fifty thousand, four hundred eleven".