420527 has 4 divisors (see below), whose sum is σ = 442680. Its totient is φ = 398376.

The previous prime is 420521. The next prime is 420551. The reversal of 420527 is 725024.

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 420527 - 2⁸ = 420271 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 420499 and 420508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420521) 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, 11048 + ... + 11085.

It is an arithmetic number, because the mean of its divisors is an integer number (110670).

2⁴²⁰⁵²⁷ is an apocalyptic number.

420527 is a deficient number, since it is larger than the sum of its proper divisors (22153).

420527 is a wasteful number, since it uses less digits than its factorization.

420527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22152.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 420527 is about 648.4805317047. The cubic root of 420527 is about 74.9200332865.

The spelling of 420527 in words is "four hundred twenty thousand, five hundred twenty-seven".