420267 has 8 divisors (see below), whose sum is σ = 578560. Its totient is φ = 271080.

The previous prime is 420263. The next prime is 420269. The reversal of 420267 is 762024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420267 - 2² = 420263 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (420263) 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 in 7 ways as a sum of consecutive naturals, for example, 2167 + ... + 2352.

It is an arithmetic number, because the mean of its divisors is an integer number (72320).

2⁴²⁰²⁶⁷ is an apocalyptic number.

420267 is a deficient number, since it is larger than the sum of its proper divisors (158293).

420267 is a wasteful number, since it uses less digits than its factorization.

420267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4553.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 420267 is about 648.2800320849. The cubic root of 420267 is about 74.9045897878.

The spelling of 420267 in words is "four hundred twenty thousand, two hundred sixty-seven".