420499 has 2 divisors, whose sum is σ = 420500. Its totient is φ = 420498.

The previous prime is 420481. The next prime is 420503. The reversal of 420499 is 994024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420499 - 2⁵ = 420467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210249 + 210250.

It is an arithmetic number, because the mean of its divisors is an integer number (210250).

2⁴²⁰⁴⁹⁹ is an apocalyptic number.

420499 is a deficient number, since it is larger than the sum of its proper divisors (1).

420499 is an equidigital number, since it uses as much as digits as its factorization.

420499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 420499 is about 648.4589424166. The cubic root of 420499 is about 74.9183704464.

It can be divided in two parts, 420 and 499, that added together give a palindrome (919).

The spelling of 420499 in words is "four hundred twenty thousand, four hundred ninety-nine".