420711 has 4 divisors (see below), whose sum is σ = 560952. Its totient is φ = 280472.

The previous prime is 420691. The next prime is 420731. The reversal of 420711 is 117024.

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 (420691) and next prime (420731).

It is a cyclic number.

It is not a de Polignac number, because 420711 - 2¹⁰ = 419687 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420731) 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, 70116 + ... + 70121.

It is an arithmetic number, because the mean of its divisors is an integer number (140238).

2⁴²⁰⁷¹¹ is an apocalyptic number.

420711 is a deficient number, since it is larger than the sum of its proper divisors (140241).

420711 is a wasteful number, since it uses less digits than its factorization.

420711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140240.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 420711 is about 648.6223862927. The cubic root of 420711 is about 74.9309586857.

Adding to 420711 its reverse (117024), we get a palindrome (537735).

The spelling of 420711 in words is "four hundred twenty thousand, seven hundred eleven", and thus it is an iban number.