420067 has 4 divisors (see below), whose sum is σ = 429880. Its totient is φ = 410256.

The previous prime is 420047. The next prime is 420073. The reversal of 420067 is 760024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420067 is a prime.

It is a Duffinian number.

420067 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (420037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4842 + ... + 4927.

It is an arithmetic number, because the mean of its divisors is an integer number (107470).

2⁴²⁰⁰⁶⁷ is an apocalyptic number.

420067 is a deficient number, since it is larger than the sum of its proper divisors (9813).

420067 is an equidigital number, since it uses as much as digits as its factorization.

420067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9812.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 420067 is about 648.1257594017. The cubic root of 420067 is about 74.8927058386.

The spelling of 420067 in words is "four hundred twenty thousand, sixty-seven".