421049 has 2 divisors, whose sum is σ = 421050. Its totient is φ = 421048.

The previous prime is 421037. The next prime is 421079. The reversal of 421049 is 940124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409600 + 11449 = 640^2 + 107^2 .

It is a cyclic number.

It is not a de Polignac number, because 421049 - 2⁴ = 421033 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421049.

It is not a weakly prime, because it can be changed into another prime (421009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210524 + 210525.

It is an arithmetic number, because the mean of its divisors is an integer number (210525).

2⁴²¹⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

421049 is a deficient number, since it is larger than the sum of its proper divisors (1).

421049 is an equidigital number, since it uses as much as digits as its factorization.

421049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 421049 is about 648.8828861975. The cubic root of 421049 is about 74.9510198714.

The spelling of 421049 in words is "four hundred twenty-one thousand, forty-nine".