420535 has 8 divisors (see below), whose sum is σ = 508896. Its totient is φ = 333600.

The previous prime is 420521. The next prime is 420551. The reversal of 420535 is 535024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420535 - 2⁵ = 420503 is a prime.

It is a Duffinian number.

420535 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477 + ... + 1033.

It is an arithmetic number, because the mean of its divisors is an integer number (63612).

2⁴²⁰⁵³⁵ is an apocalyptic number.

420535 is a deficient number, since it is larger than the sum of its proper divisors (88361).

420535 is a wasteful number, since it uses less digits than its factorization.

420535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 420535 is about 648.4866999407. The cubic root of 420535 is about 74.9205083701.

Adding to 420535 its reverse (535024), we get a palindrome (955559).

The spelling of 420535 in words is "four hundred twenty thousand, five hundred thirty-five".