420707 has 4 divisors (see below), whose sum is σ = 480816. Its totient is φ = 360600.

The previous prime is 420691. The next prime is 420731. The reversal of 420707 is 707024.

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

It is a cyclic number.

It is not a de Polignac number, because 420707 - 2⁴ = 420691 is a prime.

420707 is a modest number, since divided by 707 gives 42 as remainder.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 420707.

It is not an unprimeable number, because it can be changed into a prime (420737) 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 3 ways as a sum of consecutive naturals, for example, 30044 + ... + 30057.

It is an arithmetic number, because the mean of its divisors is an integer number (120204).

2⁴²⁰⁷⁰⁷ is an apocalyptic number.

420707 is a deficient number, since it is larger than the sum of its proper divisors (60109).

420707 is an equidigital number, since it uses as much as digits as its factorization.

420707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60108.

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 420707 is about 648.6193028272. The cubic root of 420707 is about 74.9307212109.

It can be divided in two parts, 4 and 20707, that multiplied together give a palindrome (82828).

The spelling of 420707 in words is "four hundred twenty thousand, seven hundred seven", and thus it is an iban number.