421093 has 2 divisors, whose sum is σ = 421094. Its totient is φ = 421092.

The previous prime is 421081. The next prime is 421103. The reversal of 421093 is 390124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338724 + 82369 = 582^2 + 287^2 .

It is a cyclic number.

It is not a de Polignac number, because 421093 - 2¹³ = 412901 is a prime.

421093 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 421093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421033) 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, 210546 + 210547.

It is an arithmetic number, because the mean of its divisors is an integer number (210547).

2⁴²¹⁰⁹³ is an apocalyptic number.

It is an amenable number.

421093 is a deficient number, since it is larger than the sum of its proper divisors (1).

421093 is an equidigital number, since it uses as much as digits as its factorization.

421093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 421093 is about 648.9167897350. The cubic root of 421093 is about 74.9536305969.

The spelling of 421093 in words is "four hundred twenty-one thousand, ninety-three".