419921 has 2 divisors, whose sum is σ = 419922. Its totient is φ = 419920.

The previous prime is 419893. The next prime is 419927. The reversal of 419921 is 129914.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336400 + 83521 = 580^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 419921 - 2¹⁴ = 403537 is a prime.

It is not a weakly prime, because it can be changed into another prime (419927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209960 + 209961.

It is an arithmetic number, because the mean of its divisors is an integer number (209961).

2⁴¹⁹⁹²¹ is an apocalyptic number.

It is an amenable number.

419921 is a deficient number, since it is larger than the sum of its proper divisors (1).

419921 is an equidigital number, since it uses as much as digits as its factorization.

419921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 26.

The square root of 419921 is about 648.0131171512. The cubic root of 419921 is about 74.8840281736.

The spelling of 419921 in words is "four hundred nineteen thousand, nine hundred twenty-one".