421459499 has 2 divisors, whose sum is σ = 421459500. Its totient is φ = 421459498.

The previous prime is 421459457. The next prime is 421459517. The reversal of 421459499 is 994954124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421459499 - 2¹² = 421455403 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421459439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210729749 + 210729750.

It is an arithmetic number, because the mean of its divisors is an integer number (210729750).

Almost surely, 2^421459499 is an apocalyptic number.

421459499 is a deficient number, since it is larger than the sum of its proper divisors (1).

421459499 is an equidigital number, since it uses as much as digits as its factorization.

421459499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 47.

The square root of 421459499 is about 20529.4787805244. The cubic root of 421459499 is about 749.7536963067.

It can be divided in two parts, 42 and 1459499, that added together give a palindrome (1459541).

The spelling of 421459499 in words is "four hundred twenty-one million, four hundred fifty-nine thousand, four hundred ninety-nine".