420207 has 4 divisors (see below), whose sum is σ = 560280. Its totient is φ = 280136.

The previous prime is 420193. The next prime is 420221. The reversal of 420207 is 702024.

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

It is an interprime number because it is at equal distance from previous prime (420193) and next prime (420221).

It is a cyclic number.

It is not a de Polignac number, because 420207 - 2⁴ = 420191 is a prime.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 420207.

It is not an unprimeable number, because it can be changed into a prime (420307) 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, 70032 + ... + 70037.

It is an arithmetic number, because the mean of its divisors is an integer number (140070).

2⁴²⁰²⁰⁷ is an apocalyptic number.

420207 is a deficient number, since it is larger than the sum of its proper divisors (140073).

420207 is a wasteful number, since it uses less digits than its factorization.

420207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140072.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 420207 is about 648.2337541350. The cubic root of 420207 is about 74.9010249990.

The spelling of 420207 in words is "four hundred twenty thousand, two hundred seven", and thus it is an iban number.